If you go to the Chowhound Home Page & take a look at the right side of your screen, you'll notice a small "search" box. In my experience it works like the other search engines I've encountered. (Like type in "turkey burger" and let 'er rip.)
BTW, I suspect this discussion should be in the "Site Talk" rather than "Manhattan" area. I don't think we'll be flamed for the infraction, though.
Good luck searching. Start a new thread in the other place if you still need help.