Find all the Anagrams, and the Subanagrams too!
Brachylog (2), 7 bytes

{sp}ᶠdb


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Explanation

{sp}ᶠdb
{  }ᶠ    Find all
  p        permutations of
 s         a substring of {the input}
     d   Remove duplicates (leaving the list otherwise in the same order)
      b  Remove the first (the input itself)