Search Inside Custom Fields
Lets the site search also match text stored in custom fields, such as a subtitle, location or product code, not just titles and content.
Snippet Library
Search snippets for WordPress
Snippets that improve WordPress search: search custom fields and post types, exclude pages, redirect single results and highlight matching words. For content-heavy sites where visitors need to find things quickly.
Show the Matching Text in Search Results
Replaces the usual opening-lines excerpt in search results with the passage of the post that actually contains the search words.