Perhaps you should try some spelling variations:
khanh thanh » nhanh thanh, thanh thanh, phan thanh
cong khanh » cong thanh, cong khan, cong nhan
hanh dang » hanh dong, anh dang, hanh dung
dang cong » dung cong
thanh lap » thanh san, phan lap, thanh hai
doc hieu » hoc thieu, hoc hien
dang van » hoang van, hang va
van dang » van dong, van dung, van nang

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