Perhaps you should try some spelling variations:
cong khanh » cong thanh, cong khan, cong nhan
khanh pham » thanh pham, thanh phan, hang pham
hanh dung » thanh dung, anh dung, hanh dong
doc hieu » hoc thieu, hoc hien
dung lan » dung luan, dung land, dung lam
van cong » van dong, van phong, phan cong
pham lap » phan lap, pham lan, pham gap
lan van » luan van, lang van, tan van

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