There are several options, Google, Yahoo, Bing and others
[[there was once a filemaker search engine, using the google search api that included specific filemaker sites, this has since imploded]] Anyone can set up a filemaker search engine in google,relatively easy. ((I set one up for photoshop))
When there is a find in the top of this page, why worry about find?
Most people do not know that a Google search can be demilited with a "site:filemaker.com"
or whatever site you wish.
Much less the specific time option - last year or month.