Looking for an example that customizes the sphinx search box

[bradley...@gmail.com]

I am looking for an example that customizes the sphinx search.

My goal is to only match words that are in the index roles for a page.
In addition, I would like all (and only) the index words for each page to be displayed when the matching pages are displayed.
Even better would be if the matching pages displayed in a drop down box and changed as one added or removed words from the search.

It would be OK if the words in the headings, instead of the index words, were used for each page.

I think that perhaps

https://www.sphinx-doc.org/en/master/usage/advanced/websupport/searchadapters.html#search-adapters

Can do what I am looking for, or perhaps it is already done for me if I choose the right theme ?