Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh cung » thanh cuong, thanh cong, thanh tung
tham nhung » thi nhung
cung tham » cung than, cung thang, luong tham
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan cau » phan cau, can cau, chinh cau

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 cung tham nhung ((cong dan) OR (cong tan)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh cung tham nhung ((cong dan) OR (cong tan)) chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu sang)) - thanh cung tham nhung ((cong dan) OR (cong tan)) chan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - thanh cung tham nhung ((cong dan) OR (cong tan)) chan cau*.