like: uyên thâm
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
uyên thâm * ☊ 
profound (learning) * ☊
[ uyên ] : (1) deep pool; (2) (Mandarin) duck
[ thâm ] : black; deep, profound
OXF3000: 
uyên thâm 
thorough