Perhaps you should try some spelling variations:
thanh trung » thanh tung
tuan trong » thuan trong, quan trong, tran trong
hieu sach » chieu sach, hieu cach, dien sach
manh tung » manh hung, thanh tung
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cao » toan cao, thai cao, 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: doc hieu sach - ((thanh trung) or (manh tung)) tuan trong cong ban than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - ((thanh trung) OR (manh tung)) tuan trong cong ban than cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - ((thanh trung) or (manh tung)) tuan trong cong ban than cao*.