Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
anh bang » anh hoang, anh quang, tinh bang
bang cua » ban cua, mang cua, hang cua
cua dang » cua cong, cua ban
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban

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 - anh bang cua dang ((cong dan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - anh bang cua dang ((cong dan) OR (cong san)) toan ban*.