Perhaps you should try some spelling variations:
cuong luong » cong luong, cuong duong, thuong luong
theo chieu » theo tieu, ho chieu, theo chu
thanh phan » thanh pho, thanh san, thanh toan
phan cuong » phan cong, phan xuong, phan cung
doi chieu » doc hieu, doi chi, ho chieu
ban thanh » ban hanh, ban hang
van toan » van tuan, van tan, van thanh
va toan » bai toan, tap toan, va thanh

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 chieu) OR (doi chieu)) tinh - ban thanh phan cuong luong ((va toan) OR (van toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chieu)) tinh - ban thanh phan cuong luong ((va toan) OR (van toan)) tap~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) tinh - ban thanh phan cuong luong ((va toan) OR (van toan)) tap*.