diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4a0c03eb..951a4fce7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
 # [Unreleased](https://github.com/pybamm-team/PyBaMM)
 
-## Features 
+## Features
 
+-   Added a search feature to `FuzzyDict` ([#875](https://github.com/pybamm-team/PyBaMM/pull/875))
 -   Add ambient temperature as a function of time ([#872](https://github.com/pybamm-team/PyBaMM/pull/872))
 -   Added `CasadiAlgebraicSolver` for solving algebraic systems with casadi ([#868](https://github.com/pybamm-team/PyBaMM/pull/868))
 
diff --git a/pybamm/parameters/parameter_values.py b/pybamm/parameters/parameter_values.py
index dd596e746..359033d7f 100644
--- a/pybamm/parameters/parameter_values.py
+++ b/pybamm/parameters/parameter_values.py
@@ -103,6 +103,14 @@ class ParameterValues:
         "Get the items of the dictionary"
         return self._dict_items.items()
 
+    def search(self, key, print_values=True):
+        """
+        Search dictionary for keys containing 'key'.
+
+        See :meth:`pybamm.FuzzyDict.search()`.
+        """
+        return self._dict_items.search(key, print_values)
+
     def update_from_chemistry(self, chemistry):
         """
         Load standard set of components from a 'chemistry' dictionary
diff --git a/pybamm/util.py b/pybamm/util.py
index 885d2421b..f58e04280 100644
--- a/pybamm/util.py
+++ b/pybamm/util.py
@@ -91,6 +91,37 @@ class FuzzyDict(dict):
             best_matches = self.get_best_matches(key)
             raise KeyError(f"'{key}' not found. Best matches are {best_matches}")
 
+    def search(self, key, print_values=False):
+        """
+        Search dictionary for keys containing 'key'. If print_values is True, then
+        both the keys and values will be printed. Otherwise just the values will
+        be printed. If no results are found, the best matches are printed.
+        """
+        key = key.lower()
+
+        # Sort the keys so results are stored in alphabetical order
+        keys = list(self.keys())
+        keys.sort()
+        results = {}
+
+        # Check if any of the dict keys contain the key we are searching for
+        for k in keys:
+            if key in k.lower():
+                results[k] = self[k]
+
+        if results == {}:
+            # If no results, return best matches
+            best_matches = self.get_best_matches(key)
+            print(
+                f"No results for search using '{key}'. Best matches are {best_matches}"
+            )
+        elif print_values:
+            # Else print results, including dict items
+            print("\n".join("{}\t{}".format(k, v) for k, v in results.items()))
+        else:
+            # Just print keys
+            print("\n".join("{}".format(k) for k in results.keys()))
+
 
 class Timer(object):
     """

Search parameters and variables
As @TomTranter suggests there are a lot of variables and parameters, and we should add a search function. This could be done in `pybamm.FuzzyDict`. We could search for keys containing the word a user searches for, and then provide best matches if there are no results. 
diff --git a/tests/unit/test_util.py b/tests/unit/test_util.py
index 646cc33af..b4b7f6203 100644
--- a/tests/unit/test_util.py
+++ b/tests/unit/test_util.py
@@ -6,6 +6,8 @@ import os
 import pybamm
 import tempfile
 import unittest
+from unittest.mock import patch
+from io import StringIO
 
 
 class TestUtil(unittest.TestCase):
@@ -97,6 +99,34 @@ class TestUtil(unittest.TestCase):
         self.assertTrue(pybamm.get_parameters_filepath(tempfile_obj.name) == path)
 
 
+class TestSearch(unittest.TestCase):
+    def test_url_gets_to_stdout(self):
+        model = pybamm.BaseModel()
+        model.variables = {"Electrolyte concentration": 1, "Electrode potential": 0}
+
+        param = pybamm.ParameterValues({"a": 10, "b": 2})
+
+        # Test variables search (default returns key)
+        with patch("sys.stdout", new=StringIO()) as fake_out:
+            model.variables.search("Electrode")
+            self.assertEqual(fake_out.getvalue(), "Electrode potential\n")
+
+        # Test bad var search (returns best matches)
+        with patch("sys.stdout", new=StringIO()) as fake_out:
+            model.variables.search("bad var")
+            out = (
+                "No results for search using 'bad var'. "
+                "Best matches are ['Electrolyte concentration', "
+                "'Electrode potential']\n"
+            )
+            self.assertEqual(fake_out.getvalue(), out)
+
+        # Test param search (default returns key, value)
+        with patch("sys.stdout", new=StringIO()) as fake_out:
+            param.search("a")
+            self.assertEqual(fake_out.getvalue(), "a\t10\n")
+
+
 if __name__ == "__main__":
     print("Add -v for more debug output")
     import sys

pip install -e .[dev,docs]
parse_log_pytest
requirements.txt
pytest pytest-cov pytest-xdist pytest-mock pytest-asyncio pytest
apt-get update apt-get install -y git graphviz
3.7
requirements/base.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
anyio==3.7.1
anytree==2.12.1
argon2-cffi==23.1.0
argon2-cffi-bindings==21.2.0
attrs==24.2.0
autograd==1.6.2
Babel==2.14.0
backcall==0.2.0
beautifulsoup4==4.13.3
black==23.3.0
bleach==6.0.0
casadi==3.7.0
certifi @ file:///croot/certifi_1671487769961/work/certifi
cffi==1.15.1
charset-normalizer==3.4.1
click==8.1.8
comm==0.1.4
coverage==7.2.7
cycler==0.11.0
debugpy==1.7.0
decorator==5.1.1
defusedxml==0.7.1
docutils==0.17.1
entrypoints==0.4
exceptiongroup==1.2.2
execnet==2.0.2
fastjsonschema==2.21.1
flake8==5.0.4
fonttools==4.38.0
future==1.0.0
guzzle-sphinx-theme==0.7.11
idna==3.10
imagesize==1.4.1
importlib-metadata==4.2.0
importlib-resources==5.12.0
iniconfig==2.0.0
ipykernel==6.16.2
ipython==7.34.0
ipython-genutils==0.2.0
ipywidgets==8.1.5
jedi==0.19.2
Jinja2==3.1.6
json5==0.9.16
jsonschema==4.17.3
jupyter==1.1.1
jupyter-console==6.6.3
jupyter-server==1.24.0
jupyter_client==7.4.9
jupyter_core==4.12.0
jupyterlab==3.5.3
jupyterlab-pygments==0.2.2
jupyterlab_server==2.15.2
jupyterlab_widgets==3.0.13
kiwisolver==1.4.5
MarkupSafe==2.1.5
matplotlib==3.5.3
matplotlib-inline==0.1.6
mccabe==0.7.0
mistune==3.0.2
mypy-extensions==1.0.0
nbclassic==1.2.0
nbclient==0.7.4
nbconvert==7.6.0
nbformat==5.8.0
nest-asyncio==1.6.0
notebook==6.5.7
notebook_shim==0.2.4
numpy==1.21.6
packaging==24.0
pandas==1.3.5
pandocfilters==1.5.1
parso==0.8.4
pathspec==0.11.2
pexpect==4.9.0
pickleshare==0.7.5
Pillow==9.5.0
pkgutil_resolve_name==1.3.10
platformdirs==4.0.0
pluggy==1.2.0
prometheus-client==0.17.1
prompt_toolkit==3.0.48
psutil==7.0.0
ptyprocess==0.7.0
-e git+https://github.com/pybamm-team/PyBaMM.git@8edbd53cf8f866b0d5c4af2e98be197c3fa18208#egg=pybamm
pycodestyle==2.9.1
pycparser==2.21
pyflakes==2.5.0
Pygments==2.17.2
pyparsing==3.1.4
pyrsistent==0.19.3
pytest==7.4.4
pytest-asyncio==0.21.2
pytest-cov==4.1.0
pytest-mock==3.11.1
pytest-xdist==3.5.0
python-dateutil==2.9.0.post0
pytz==2025.2
pyzmq==26.2.1
requests==2.31.0
scikit-fem==8.1.0
scipy==1.7.3
Send2Trash==1.8.3
six==1.17.0
sniffio==1.3.1
snowballstemmer==2.2.0
soupsieve==2.4.1
Sphinx==4.3.2
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
terminado==0.17.1
tinycss2==1.2.1
tomli==2.0.1
tornado==6.2
traitlets==5.9.0
typed-ast==1.5.5
typing_extensions==4.7.1
urllib3==2.0.7
wcwidth==0.2.13
webencodings==0.5.1
websocket-client==1.6.1
widgetsnbextension==4.0.13
zipp==3.15.0

name: PyBaMM
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=22.3.1=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - anyio==3.7.1
      - anytree==2.12.1
      - argon2-cffi==23.1.0
      - argon2-cffi-bindings==21.2.0
      - attrs==24.2.0
      - autograd==1.6.2
      - babel==2.14.0
      - backcall==0.2.0
      - beautifulsoup4==4.13.3
      - black==23.3.0
      - bleach==6.0.0
      - casadi==3.7.0
      - cffi==1.15.1
      - charset-normalizer==3.4.1
      - click==8.1.8
      - comm==0.1.4
      - coverage==7.2.7
      - cycler==0.11.0
      - debugpy==1.7.0
      - decorator==5.1.1
      - defusedxml==0.7.1
      - docutils==0.17.1
      - entrypoints==0.4
      - exceptiongroup==1.2.2
      - execnet==2.0.2
      - fastjsonschema==2.21.1
      - flake8==5.0.4
      - fonttools==4.38.0
      - future==1.0.0
      - guzzle-sphinx-theme==0.7.11
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==4.2.0
      - importlib-resources==5.12.0
      - iniconfig==2.0.0
      - ipykernel==6.16.2
      - ipython==7.34.0
      - ipython-genutils==0.2.0
      - ipywidgets==8.1.5
      - jedi==0.19.2
      - jinja2==3.1.6
      - json5==0.9.16
      - jsonschema==4.17.3
      - jupyter==1.1.1
      - jupyter-client==7.4.9
      - jupyter-console==6.6.3
      - jupyter-core==4.12.0
      - jupyter-server==1.24.0
      - jupyterlab==3.5.3
      - jupyterlab-pygments==0.2.2
      - jupyterlab-server==2.15.2
      - jupyterlab-widgets==3.0.13
      - kiwisolver==1.4.5
      - markupsafe==2.1.5
      - matplotlib==3.5.3
      - matplotlib-inline==0.1.6
      - mccabe==0.7.0
      - mistune==3.0.2
      - mypy-extensions==1.0.0
      - nbclassic==1.2.0
      - nbclient==0.7.4
      - nbconvert==7.6.0
      - nbformat==5.8.0
      - nest-asyncio==1.6.0
      - notebook==6.5.7
      - notebook-shim==0.2.4
      - numpy==1.21.6
      - packaging==24.0
      - pandas==1.3.5
      - pandocfilters==1.5.1
      - parso==0.8.4
      - pathspec==0.11.2
      - pexpect==4.9.0
      - pickleshare==0.7.5
      - pillow==9.5.0
      - pkgutil-resolve-name==1.3.10
      - platformdirs==4.0.0
      - pluggy==1.2.0
      - prometheus-client==0.17.1
      - prompt-toolkit==3.0.48
      - psutil==7.0.0
      - ptyprocess==0.7.0
      - pycodestyle==2.9.1
      - pycparser==2.21
      - pyflakes==2.5.0
      - pygments==2.17.2
      - pyparsing==3.1.4
      - pyrsistent==0.19.3
      - pytest==7.4.4
      - pytest-asyncio==0.21.2
      - pytest-cov==4.1.0
      - pytest-mock==3.11.1
      - pytest-xdist==3.5.0
      - python-dateutil==2.9.0.post0
      - pytz==2025.2
      - pyzmq==26.2.1
      - requests==2.31.0
      - scikit-fem==8.1.0
      - scipy==1.7.3
      - send2trash==1.8.3
      - six==1.17.0
      - sniffio==1.3.1
      - snowballstemmer==2.2.0
      - soupsieve==2.4.1
      - sphinx==4.3.2
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - terminado==0.17.1
      - tinycss2==1.2.1
      - tomli==2.0.1
      - tornado==6.2
      - traitlets==5.9.0
      - typed-ast==1.5.5
      - typing-extensions==4.7.1
      - urllib3==2.0.7
      - wcwidth==0.2.13
      - webencodings==0.5.1
      - websocket-client==1.6.1
      - widgetsnbextension==4.0.13
      - zipp==3.15.0
prefix: /opt/conda/envs/PyBaMM

tests/unit/test_util.py::TestSearch::test_url_gets_to_stdout
tests/unit/test_util.py::TestUtil::test_fuzzy_dict tests/unit/test_util.py::TestUtil::test_get_parameters_filepath tests/unit/test_util.py::TestUtil::test_infinite_nested_dict tests/unit/test_util.py::TestUtil::test_load_function tests/unit/test_util.py::TestUtil::test_rmse
pybamm/parameters/parameter_values.py CHANGELOG.md pybamm/util.py
pybamm/parameters/parameter_values.py CHANGELOG.md pybamm/util.py