The "search:" form--located at the top of every page--will do a search of the descriptions in the AppleScripts database for the search terms of you enter.
Viable results will contain all your search terms.
Google Site Search
This search form, located at the bottom of every page, performs a very thorough Google search of just this site:
The results will be returned on a Google page.
The entry form labeled "info search" and located near the top of the right column will search articles and "what's new" entries.