Perhaps you should try some spelling variations:
hieu sach » chieu sach, hieu cach, dien sach
van thanh » ban thanh
doc hieu » toc thieu, hoc thieu, hoc hien
hanh ban » thanh ban, hang ban, hanh san
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - hanh ban ((cua dung) OR (cua dang)) cong ((van thanh) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh ban ((cua dung) OR (cua dang)) cong ((van thanh) OR (van tuan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - hanh ban ((cua dung) OR (cua dang)) cong ((van thanh) or (van tuan)) ban".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - hanh ban ((cua dung) OR (cua dang)) cong ((van thanh) or (van tuan)) ban*.