Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
manh trung » thanh trung, manh hung, sinh trung
manh tung » manh hung, thanh tung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
va dung » van dung, va duong, vat dung
tac van » tac vang, cac van, tac va

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 xanh - ((manh trung) or (manh tung)) va dung cong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((manh trung) OR (manh tung)) va dung cong tac van ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((manh trung) or (manh tung)) va dung cong tac van ban*.