Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
quan trong » gian trong
qua trong » qua trinh, qua song, qua cong
ho chieu » theo chieu, hoc thieu, doi chieu
van toan » van tuan, van tan, van thanh
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: ho chieu xanh - hanh tranh ((qua trong) OR (quan trong)) cong ((van toan) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh tranh ((qua trong) OR (quan trong)) cong ((van toan) or (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh tranh ((qua trong) OR (quan trong)) cong ((van toan) or (ban than)) cau*.