like: sự tiết giảm
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
sự tiết giảm * ☊ 
reduction * ☊
[ sự ] : deed, act, action event, occurrence, (classifier for actions, states)
[ tiết ] : to flow (out), leak
[ giảm ] : to decrease, cut down, reduce, lessen, drop, fall
[ giảm ] : reduce
[ giảm ] : reduction