I've asked my web engine company many times for a search tool to be added to the Discussion Forum, but they have never deemed it important enough to implement.
However, you can use Google as a substitute. Just enter your Real Estate related search terms in a Google search along with "dfwreiclub.com" as an extra search term, and your results will likely include multiple links to topics in our Discussion Forum. It's not perfect, but it works pretty well.
Thanks,
Robin