Perhaps you should try some spelling variations:
thanh dang » thanh hang, thanh dan, thanh dong
doi chieu » doc hieu, doi chi, mot chieu
dang cong » dung cong
cong nang » cong ngang, cong lang, cong nong
nang phan » nang phat, nang thanh, nang quan
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: ((doi chieu) or (toc thieu)) sach - thanh dang van dang cong nang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - thanh dang van dang cong nang phan tu.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - thanh dang van dang cong nang phan tu*.