Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan
va dang » van dang, va nang, da dang
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - canh trinh ((va dang) OR (va lang)) cong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - canh trinh ((va dang) OR (va lang)) cong ((dan toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh trinh ((va dang) OR (va lang)) cong ((dan toan) or (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh trinh ((va dang) OR (va lang)) cong ((dan toan) or (manh toan)) cau*.