Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trung cap » truong cao, trung tam
dung cong » dung trong
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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 ((dung cua) or (trung cap)) dung cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - thanh ((dung cua) OR (trung cap)) dung cong dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu sach)) - thanh ((dung cua) or (trung cap)) dung cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu sach)) - thanh ((dung cua) or (trung cap)) dung cong dan than cap*.