Whenever I try to use the search engine on Dhammawheel I find there is a poverty of results returned compared to a quick site:http://www.dhammawheel.com/ search on google. I just searched for 'munindo' and dhammawheel's own search engine gave me 1 hit. Google gave me 81. Granted, sometimes there are double hits but none so far on the first two pages of hits.
What's wrong with Dhammawheel's search engine? I don't really like using google to search forums with, it does not provide the same advanced criteria tailored to forums that most specialised engines do. Given that the forum uses phpbb software there should be several options for choice of search backend and probably also some plugins available to improve on this as well. Something worth looking into maybe?