Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
tranh cao » trinh cao, tranh cac, tranh cai
cao nhung » cho nhung, cam nhung, cao chung
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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

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