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315 Activities V
exact: like: sự hợp tác
VNEN 
sự hợp tác * ☊ 
collaboration, cooperation * ☊
[ sự ] : deed, act, action event, occurrence, (classifier for actions, states)
[ hợp ] : to suit, fit, be compatible, go together, unite
[ tác ] : (1) job, task, work; (2) to make, do