Perhaps you should try some spelling variations:
hanh dung » thanh dung, anh dung, hanh dong
cong hanh » cong thanh, cong khanh, hong hanh
hanh phan » thanh phan, anh phan, hanh han
doc hieu » hoc thieu, hoc hien
van cong » van dong, van phong, phan cong
phan lap » phan dau
luan » quan, lan

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