Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » hanh trinh, hanh trang, lanh tranh
phuong dan » phuong danh, phuong doan, huong dan
ho chieu » theo chieu, hoc thieu, doi chieu
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 - ((hanh tranh) or (canh tranh)) va nhung phuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((hanh tranh) OR (canh tranh)) va nhung phuong dan toan cau*.