Crack a few eggs and pour them into the radiator.
I'm kidding. But really, I heard of someone who did that.
Seriously tho, assuming you bled the system correctly, there's a good chance you're getting air or gas introduced into the cooling system. This results in over pressurizing the system and overheating, which may have cause your expansion tank to rupture. You should do a pressure test on the cooling system. If no leaks are found, try a combustion leak test to see if there is any exhaust gases coming in through a weak head gasket.