Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
vuong tan » vuong tuan, vuong tat, duong tan
ho chieu » hoc thieu, doi chieu, mot chieu
va huong » va thuong, va phuong, va tuong
van hung » van dung, manh hung, van duong
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 huong) or (van hung)) vuong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - canh tranh ((va huong) OR (van hung)) vuong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - canh tranh ((va huong) or (van hung)) vuong tan toan cau*.