like: ông tổ
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
ông tổ * ☊ 
ancestor of a line of descent * ☊
[ ông ] : Mr., you (m)
[ tổ ] : (1) nest; (2) only; (3) group, team