Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
doi chieu » doc hieu, doi chi, mot chieu
nang cong » nang song, dang cong, bang 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 nang » van quang, van ban, van dong
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 - thanh dung van nang cong khan than lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - thanh dung van nang cong khan than lap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sang - thanh dung van nang cong khan than lap*.