Perhaps you should try some spelling variations:
thanh cuong » thanh chuong, thanh cong, thanh huong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cuong cac » luong cac, cong cac, trong cac
dung cong » dung trong
cac dung » cach dung, cac duong, tac dung
dan toan » van toan, dan than, manh toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chieu sang)) - thanh cuong cac dung cong ((dan toan) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - thanh cuong cac dung cong ((dan toan) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - thanh cuong cac dung cong ((dan toan) or (tan tran)) cau*.