bôi nhọ 
to dishonor, soil, discredit [ bôi ] : (1) to smear, rub out, blot out, be careless; (2) cup
[ nhọ ] : soot; to stain, smear, soil; black (person)
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
bôi nhọ to dishonor, soil, discredit