This may be old news, as I have been away for a while. I was very much pleased to see that searching the Ubuntu Wiki had so much improved. I’m back into pushing stuff to the UWN, and not familiar with the moin syntax. So I looked for some help pages on the wiki and got directed to an useful search page. The 3 first links I got after refining the search terms and options were what I was looking for. Good, very good!
The search page is here, there is a link top right, close by the user prefs one. The options are impressive. See an example below, no more excuses not to search the Wiki :)
All my thanks to whomever worked on it. Have fun!