INTRODUCE: Term Synonyms
SearchWP offers insight into searches taking place on your site via the Search Stats link under the Dashboard menu in the WordPress admin. You might notice that a lot of people are searching for slight variants of keywords or abbreviations that aren’t getting the results you’re looking for. The Term Synonyms Extension allows you to manually define synonym relationships in your index.
What’s more is you can have the synonyms completely replace the search term. If people are commonly searching for terms that simply aren’t (and never will be) in your index, you can replace them before searches are performed, getting the results your visitors are looking for.