đâu có ngu 
to not be stupid [ đâu ] : where, here, this; at all (negation marker)
[ có ] : to be, have, exist; there is, there are
[ ngu ] : (1) foolish, stupid; (2) the Emperor Yu, who ruled China from 2204-2197 BC
Most Common Compounds Set 1:
Most Common Compounds Set 2 :