Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan
tung va » trung va, tuong va, dung va
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: theo chieu xanh - thanh tung va dung phuong ((dan toan) OR (manh toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - thanh tung va dung phuong ((dan toan) OR (manh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh tung va dung phuong ((dan toan) OR (manh toan)) tap*.