Big thanks to member @axtona submitted [vbresults.com] Searchable Custom Pages 1.0.1 – This add-on allows you to make custom pages searchable by using a custom database table with a new resource:
Summary
This add-on allows you to make custom pages searchable by using a custom database table that is shared by XenForo and your in-house system. Built to work alongside Custom PHP Pages, but can work without it.