In Shopify, FAQ pages are usually created as a single page, but this is an example of how to make the content within the page searchable by using a section that allows you to embed pages within a page.
Example of how to implement a search within the "FAQ" section by making specific pages searchable in the Shopify theme "Dawn"
[Setup Step 1] Add each item you want to post as a "page" and set the "FAQ" template as a page section in the theme editor.
[Settings Step 2] Add a customized liquid section to the "FAQ" template created in Setting Step 1 and set up a "search form"
[Settings Step 3] Modify various parts of main-search.liquid (Adding detailed processing to various parts to use the normal search function)
