Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
phan cong » thanh cong
cong khan » cong khanh, cong nhan, cong phan
khan than » phan than, khoan thanh, khanh thanh
dung van » duong van, dung va, dang van
van phan » van phong, van thanh, luan phan
than lap » thanh lap, phan lap, toan lap

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 van phan cong khan than lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (toc thieu)) sang - hanh dung van phan cong khan than lap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (toc thieu)) sang - hanh dung van phan cong khan than lap*.