As I explained in the Mudcat FAQ (click), the Filter is the best way to find things by thread name. Just put part of the thread name in the filter box, and set the age back a bit. The Forum Search (in Quicklinks) is the way to find things by message title or user name.
The Digitrad and Forum search covers the entire text of everything, but it depends on an index that is sometimes not updated for a number of months - so your search may miss recent messages.
-Joe Offer-