Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
luan minh » xuan minh, tuan minh, luan kinh
minh cong » minh cuong, sinh cong, minh hoang
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham
phan chat » phan phat, phap chat, nhan chat

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 minh cong than phan chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - hanh dung luan minh cong than phan chat*.