contribution + Helping a cause by giving money, things, services ☊ contribution ☊ 
sự đóng góp ☊ contribution ☊ việc đóng góp ☊ contribution + Helping a cause by giving money, things, services ☊ contribution ☊ sự đóng góp ☊ contribution ☊ việc đóng góp ☊