Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
luan danh » luan thanh, luan van, luan nang
danh cong » dang cong, hanh cong, anh cong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van
van dau » van dao, phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sach - hanh dung luan danh cong tan van dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - hanh dung luan danh cong tan van dau*.