Why leave beautiful Brasil? That sounds like a potential mistake to me. You most likely fly for TAM (operates both A330s and A319/20s) which is a solid, growing airline and, as we all know, the flight attendants are gorgeous..........
The grass is NOT always greener on the other side.
My bet is that if you go to Korean or a Chinese airline to fly the A330, you will miss Brasil so much that you will want to return within weeks. If you really wish to fly overseas and you want to experience new countries and adventures, why not apply to Emirates. Still, I personally wouldn't leave a fast growing airline in Brasil - and with the Olympics and World Cup coming up, you will be seriously home sick if you have to watch them from Asia.
Talk to other Brasilians who have made the switch to Asia before making any big decisions - you might regret leaving!!!!! Good luck.