Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua trung » cua truong, xuan trung, ba trung
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
ban than » ban thanh, van thanh, ban hang
van tan » van tuan, van ban, van tai

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