Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
bang cong » dang cong, bang song, hang cong
doc hieu » toc thieu, hoc thieu
anh dang » anh dong, anh dung, anh bang
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

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) or (hoc hien)) sach - ((hanh trang) or (anh dang)) cua bang cong tan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) sach - ((hanh trang) OR (anh dang)) cua bang cong tan than ban.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) sach - ((hanh trang) or (anh dang)) cua bang cong tan than ban*.