Perhaps you should try some spelling variations:
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
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
phan lap » phan dau
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 van phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) sang - hanh dung lan van cong van phan lap".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) sang - hanh dung lan van cong van phan lap*.