Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cau sach » cao sach, rau sach, khau sach
hau sach » khau sach, ham sach, rau sach
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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