Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
cong va » dong va, cong ha, cong tac
va dung » van dung, va duong, vat dung

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 xanh - thanh cong va dung cong ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh cong va dung cong ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh cong va dung cong ((dan toan) or (dan than)) cau*.