Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
tranh van » tran van, trinh van, thanh van
hung cong » nhung cong, hung cuong, phung cong
ho chieu » hoc thieu, doi chieu, mot chieu
van hung » van dung, manh hung, van duong
tap toan » tap doan, tap quan, bai toan
van tan » van tuan, van ban, van tai

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)) xanh - canh tranh van hung cong ((tap toan) or (van tan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - canh tranh van hung cong ((tap toan) OR (van tan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - canh tranh van hung cong ((tap toan) or (van tan)) ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - canh tranh van hung cong ((tap toan) or (van tan)) ban*.