I've improved the forum search tool (which hasn't worked well in a long time) by using Google's search engine.
Now when you click on the "Search" link at the top right corner of the forum... you will get a Forum Search page which only searches results from the forums. It isn't always "real-time", it takes time for Google to index pages, but it does work really well. Choose your keywords wisely!
Peter Waite
HealingWell.com
https://www.healingwell.com