like: sự ô nhiêm
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
sự ô nhiêm * ☊ 
pollution * ☊
[ sự ] : deed, act, action event, occurrence, (classifier for actions, states)
[ ô ] : (1) suburb, (2) umbrella
[ ô ] : umbrella