Perhaps you should try some spelling variations:
thanh hang » thanh hoang, thanh thang, tranh hang
nhung cong » dung cong, thong cong, hang cong
cho chinh » chon chinh, che chinh, cuoc chinh
tran manh » tran minh, tran thanh, tran van
cong tac » cong ty
than ma » than man, khan ma, nhan ma
than va » thanh va, nhan va, toan va

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: cho chinh sach - thanh hang va nhung cong tac ((tran manh) OR (((than ma) OR (than va))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho chinh sach - thanh hang va nhung cong tac ((tran manh) or (((than ma) OR (than va))))~".
• Adding a wildcard symbol may retrieve word variants: cho chinh sach - thanh hang va nhung cong tac ((tran manh) or (((than ma) OR (than va))))*.