Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh lang » nhanh quang, nhanh thang, nhanh dong
nhan dang » nhan dan, phan dang, tran dang
cua nhung » va nhung
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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: theo chieu xanh - ((nhanh lang) OR (nhan dang)) cua nhung phuong ((dan toan) OR (dan than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((nhanh lang) or (nhan dang)) cua nhung phuong ((dan toan) OR (dan than)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((nhanh lang) or (nhan dang)) cua nhung phuong ((dan toan) OR (dan than)) cau*.