I find the current CMF search function almost useless,
not to mention difficult because of the Captcha which Admin has chosen.
Example: today I tried searching 'BEP.UN' with no result in either "entire thread" search or "title only" search.
But when I use the ordinary Google search bar and enter "BEP.UN : canadian money forum" I have success.
So the point is; using Google, enter your search word and add ": canadian money forum".
It works sometimes.