bảo trọng 
to look after oneself, take care of oneself [ bảo ] : (1) to say, order, tell (someone to do something); (2) to insure; (3) to protect, guard; (4) precious, valuable
[ trọng ] : heavy, important; to think high of, hold in esteem
Most Common Compounds Set 1:
Most Common Compounds Set 2 :