In the advanced search you can search for any word, phrase or none of the words but not searching for posts that contains ALL of the words.
This is highly needed. It's hard to find relevant info on the site now.
Perhaps there is some other way to search for all words but I havent found it. ("+word1 +word2" doesn't work for example).
I rather not use external search engines to find content either.
Links:
[1] http://kdenlive.org/forum/contribution-forums/website-development