Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
van nhuong » van chuong, van phuong, van huong
van nhung » va nhung, van hung, van phung
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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: theo chieu xanh - hanh tranh ((van nhung) OR (van nhuong)) cong ((dan than) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh tranh ((van nhung) OR (van nhuong)) cong ((dan than) or (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh tranh ((van nhung) OR (van nhuong)) cong ((dan than) or (ban than)) cau*.