Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
dang van » hoang van, hang va
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - ((anh tang) or (anh dang)) va dung cong dang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((anh tang) OR (anh dang)) va dung cong dang van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((anh tang) or (anh dang)) va dung cong dang van ban*.