Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
dung cong » dung trong
thanh cac » hanh cac, thanh bac, thanh ca
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - thanh ((tung cua) or (dung cua)) dung cong dan ((than cau) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh ((tung cua) OR (dung cua)) dung cong dan ((than cau) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh ((tung cua) or (dung cua)) dung cong dan ((than cau) or (thanh cac))*.