Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh hinh » hanh chinh, hanh tinh, hanh dinh
ho chieu » theo chieu, hoc thieu, mot chieu
va duong » van duong, va tuong, va huong
cong dan » cong san, cong tan, huong dan
va dung » van dung, vat dung, va ung
dan van » dang van, doan van, dao van

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