Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh hang » thanh hang, hang hang, hanh han
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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 - hanh hang ((cua hang) OR (cua dang)) ((cong dan) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh hang ((cua hang) OR (cua dang)) ((cong dan) OR (cong tan)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - hanh hang ((cua hang) OR (cua dang)) ((cong dan) or (cong tan)) toan cao*".