Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cong chua » cong cua, cong chuc, con chua
chua dang » cua dang, chua dong, chua nang
dang cong » dung cong
cong danh » cuong danh, cong dan, cong thanh
danh van » doanh van, dang van, dinh van

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 sang) or (chieu sach)) - thanh cong chua dang cong danh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - thanh cong chua dang cong danh van ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu sach)) - thanh cong chua dang cong danh van ban*.