ăn chắc 
thrifty; to be sure to win [ ăn ] : (1) to eat (away at), attack, corrode, cost; to attend, celebrate, take part in (a event where food is served); (3) to earn illegally
[ chắc ] : probably, certainly, sure; must be, expect; to be firm; firmly, certainly, surely
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
ăn chắc mặc bền comfort is better than pride