Support the Search Terms Report is one of the most helpful utilities from Magento 2. The report will shows the number of results as well as the number of times the term was used. Moreover, any data will be stored and filtered by term, store, results, and hits. Export them as you need for further analysis.
Report > Marketing > Search Term.
Search Query, filter the search term for the report.
In addition to the Search Terms, I have a search tool for your inquiry, Magento 2 Advanced Search module from Mageplaza that certaintly helps improve the search engine ranking better and better.
Ref: Magento 2 User Guide
It comes to the end of tutorial: How to Report Search Terms in Magento 2.