Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
tac dung » sach dung, xay dung, tin dung
toan ban » van ban

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) OR (chieu sach)) - tac dung luan chung cong danh toan ban~.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - tac dung luan chung cong danh toan ban*.