làm gương xấu 
to set a bad example [ làm ] : to do, work, make, function as, serve; to cause something to happen
[ gương ] : (1) mirror; (2) example, pattern, model
[ xấu ] : bad, ugly, unattractive, foul, nasty, terrible, awful, poor quality
Most Common Compounds Set 1:
Most Common Compounds Set 2 :