Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, thien hieu, thuc hieu
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong san » cong tac
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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: ((theo hieu) OR (theo tieu)) lang - thanh trung cua nhung cong san ((phan cau) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo hieu) OR (theo tieu)) lang - thanh trung cua nhung cong san ((phan cau) or (phan dau))~".
• Adding a wildcard symbol may retrieve word variants: ((theo hieu) OR (theo tieu)) lang - thanh trung cua nhung cong san ((phan cau) or (phan dau))*.