Perhaps you should try some spelling variations:
thanh trung » thanh tung
tieu sach » chieu sach, dien sach, te sach
trung ca » trung cap, truong ca, trung cua
ca thong » ca thuong, va thong, ca trong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chinh va » chinh ta, chinh tai, hanh va

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 trung ca thong ((cong dan) or (cong tan)) chinh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh trung ca thong ((cong dan) OR (cong tan)) chinh va.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh trung ca thong ((cong dan) or (cong tan)) chinh va*.