Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
cau thang » cang thang, cuu thanh, nam thang
cap bang » cao bang, can bang, lap bang
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chiet tach) OR (chieu sach)) - thanh tung ((cau thang) or (cap bang)) cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chiet tach) OR (chieu sach)) - thanh tung ((cau thang) OR (cap bang)) cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chiet tach) OR (chieu sach)) - thanh tung ((cau thang) or (cap bang)) cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chiet tach) OR (chieu sach)) - thanh tung ((cau thang) or (cap bang)) cong dan phan cau*.