Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
chu sach » cau sach, thu sach, chuc hach
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
toan ban » van ban

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

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