Perhaps you should try some spelling variations:
thua thien » thuc hien
thien nang » thien bang, thien dang, trien nang
hanh mang » nhanh mang, hanh trang, nhanh lang
luan tong » luan tuong, luan dong, luan nong
luan cong » luat cong, luong cong, luan chung
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran tap » toan tap, tran tan, tran tuan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: thua thien nang - hanh mang ((luan tong) OR (luan cong)) cong tac tran tap~.
• Adding a wildcard symbol may retrieve word variants: thua thien nang - hanh mang ((luan tong) or (luan cong)) cong tac tran tap*.