Two for two this time guys, maybe try to answer the question before you get all sarcastic?
TT hours means total time, IE all of the hours you've been in an aircraft either as the pilot in command (Captain) or the second in command (First Officer). -I don't think Flight Engineer counts towards total time-.
Most airlines don't ask for a330/747 time. If one does, the only realistic way to get it would be to work at an airline that has that type, then switch to the new airline. There are a ton of ways to get to the airlines, if that's your goal, that involve working your way up through different aircraft and companies. Hope this helps.