Perhaps you should try some spelling variations:
thanh trung » thanh tung
va phuong » va thuong, cac phuong
doi chiu » doi chieu, doi chi, hoi chiu
va thong » va thuong, he thong, va cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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: doi chiu trach - ((canh tranh) OR (thanh trung)) ((va thong) OR (va phuong)) cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiu trach - ((canh tranh) or (thanh trung)) ((va thong) OR (va phuong)) cong dan toan ban~".
• Adding a wildcard symbol may retrieve word variants: doi chiu trach - ((canh tranh) or (thanh trung)) ((va thong) OR (va phuong)) cong dan toan ban*.