Migration via phpmyadmin
if migration sounds too hard ...

install and config
https://www.drupal.org/project/default_content_deploy

then 

"drush default-content-deploy:entity-list"


to see a list then: 

"drush default-content-deploy:export taxonomy_term"
"drush default-content-deploy:export node"
"drush default-content-deploy:exportcomment"


copy the exported files to your next site, make sure the nodes taxonomy_terms and comments have same field structure (can do this by exporting / importing config or look at features module) 

after that import your content.

   "default-content-deploy:import"


again make backups of your "new" database before this though !

extra bonus use version control on the exported content .. that way developers / live sites can share the content easily.