like: đơn thư
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
đơn thư * ☊ 
letter * ☊
[ đơn ] : application, petition, request; single; to file
[ thư ] : letter; to write
[ thư ] : letter