Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
chat quang » chat luong, pham quang
quang cong » quang cuong, quang dong, quang hoang
cong chat » cong nhat, cong cua, cong ha
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 chat quang cong danh van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu sach)) - thanh cong chat quang cong danh van ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu sach)) - thanh cong chat quang cong danh van ban*.