Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trong » hanh trang, anh trong, hinh trong
trong dan » trong dang, trong san, trong tan
dan dung » van dung, tin dung, ap dung
lan toan » van toan, dan toan, manh toan
lap toan » tap toan, lap doanh, phap toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - hanh trong dan dung phuong ((lan toan) OR (lap toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - hanh trong dan dung phuong ((lan toan) OR (lap toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - hanh trong dan dung phuong ((lan toan) OR (lap toan)) cau*.