Perhaps you should try some spelling variations:
dung cong » dung trong
chua xang » chua nang, chuc nang, chu bang
chu xanh » chu manh, chieu xanh, chuc danh
anh dung » anh dong, anh huong, sach dung
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan
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: cho ((chu xanh) or (chua xang)) - anh dung va dung cong ((san toan) OR (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho ((chu xanh) OR (chua xang)) - anh dung va dung cong ((san toan) OR (dan toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((chu xanh) or (chua xang)) - anh dung va dung cong ((san toan) OR (dan toan)) cau".
• Adding a wildcard symbol may retrieve word variants: cho ((chu xanh) or (chua xang)) - anh dung va dung cong ((san toan) OR (dan toan)) cau*.