Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
luan kinh » xuan kinh, luat kinh, luan chinh
kinh cong » minh cong, sinh cong, dinh cong
cong tran » cong tan, cong tuan, cong toan
tran van » luan van
van chat » cao 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 kinh cong tran van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - hanh dung luan kinh cong tran van chat*.