lợi bất cập hại 
more harm than good [ lợi ] : (1) to be profitable, advantageous, gainful; profit; (2) gum (tissue in mouth)
[ bất ] : (1) not, non-, un-; (2) type of card game
[ cập ] : to reach, come to
[ hại ] : to damage, hurt, harm, murder
Most Common Compounds Set 1:
Most Common Compounds Set 2 :