gãi đúng chỗ ngứa 
to butter up [ gãi ] : to scratch
[ đúng ] : (1) correct, exact, sharp (of time), accurate, correct; (2) to bind (book); to close, shut; to pay; to build, (3) to fit with, go with, agree with, be in accord with; (4) to play (a role), act
[ chỗ ] : place, spot, site, point, seat
[ ngứa ] : itchy; to itch
Most Common Compounds Set 1:
Most Common Compounds Set 2 :