Perhaps you should try some spelling variations:
thanh trung » thanh tung
tieu sach » chieu sach, dien sach, viet sach
trung cua » truong cua, trung tuan, trung cap
cong cong » cong dong, trong cong, dung cong
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
te sach » toc sach
can cau » van cau, ban cau, ca cau

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 ((tieu sach) OR (te sach)) - thanh trung cua cong cong dan ((chan cau) OR (can cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) or (te sach)) - thanh trung cua cong cong dan ((chan cau) OR (can cau))~".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (te sach)) - thanh trung cua cong cong dan ((chan cau) OR (can cau))*.