Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
truong van » trong van, truong va, truong dai
trong vat » trong van, trong va, trong dat
dung cong » dung trong
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: ho ((chieu sach) OR (chieu sang)) - thanh ((truong van) or (trong vat)) dung cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh ((truong van) OR (trong vat)) dung cong dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - thanh ((truong van) or (trong vat)) dung cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - thanh ((truong van) or (trong vat)) dung cong dan than cap*.