Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
trung hanh » trung thanh, trung khanh, trung anh
hanh nhung » anh nhung, canh nhung, doanh nhung
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cac » thanh cac, phan cac, thac 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 trung hanh nhung ((cong ban) OR (cong san)) than cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh trung hanh nhung ((cong ban) OR (cong san)) than cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu sang)) - thanh trung hanh nhung ((cong ban) OR (cong san)) than cac".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - thanh trung hanh nhung ((cong ban) OR (cong san)) than cac*.