Just a quick question for u guys. But is it possible that i special summon dmoc with dimension fusion's effect and get dimension fusion back into my hand?

Because to me, dimension fusion needs to select dmoc from the graveyard first, then dmoc gets special summon, then dimension fusion goes into the graveyard so i shouldn't be able to get dimension fusion back.....

You CAN get Dimension Fusion back, because Dimension Fusion goes to the graveyard after resolution and THEN the effect of Dark Magician of Chaos activates and starts a new chain (and by this time, Dimension Fusion is already in the grave making it a legal target).