Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
bang cong » dang cong, bang song, hang cong
anh dung » anh dong, anh huong, ung dung
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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: theo ((chieu xanh) OR (chieu sach)) - ((anh dung) OR (sach dung)) cua bang cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - ((anh dung) or (sach dung)) cua bang cong dan van ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - ((anh dung) or (sach dung)) cua bang cong dan van ban*.