Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
cong phan » cong nhan, cong khan, chong phap
phan pham » phan phat, phan ham, phan phan
van cong » van dong, van phong, phan cong
pham lan » pham luan, pham van, phan lan
luan » quan

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)) sang - hanh dung luan van cong phan pham lan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - hanh dung luan van cong phan pham lan.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sang - hanh dung luan van cong phan pham lan*.