Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh tung, thanh huong
thanh thuong » thanh huong, thanh chuong, thanh phuong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
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 (hieu lang)) - ((thanh truong) or (thanh thuong)) cua tong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - ((thanh truong) OR (thanh thuong)) cua tong cong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - ((thanh truong) or (thanh thuong)) cua tong cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - ((thanh truong) or (thanh thuong)) cua tong cong dan van ban*.