SearchWP
With WP Client Reports Pro, you can add a new section to your report that gives you and your client informative search metrics for your site during a set amount of time.
SearchWP is an advanced premium plugin that takes over the basic WordPress search and adds the ability to search fields, taxonomies, custom post types, documents and much more. You can also set up multiple search engines that have different purposes.
There is no set up needed once you have the plugin installed, activated, and enabled in the Client Report Settings.