Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
thanh dung » thanh duong, thanh tung, thanh hung
hang cong » dang cong, hang nong, bang cong
cho hang » cho thanh, cho phan, thi hang
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.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) OR (chieu xanh)) - thanh dung cho hang cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu xanh)) - thanh dung cho hang cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu xanh)) - thanh dung cho hang cong dan van ban*.