Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
dung cong » dung trong
van thanh » ban thanh, van tuan
ho chieu » hoc thieu, doi chieu, mot chieu
tranh va » tranh van, trang va, trinh va
van toan » van tuan, van tan, manh toan
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) sach - canh tranh va dung cong ((van toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - canh tranh va dung cong ((van toan) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - canh tranh va dung cong ((van toan) or (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - canh tranh va dung cong ((van toan) or (van thanh)) cau*.