Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
phuong cong » phong cong, phung cong, phuong hoang
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cac » trinh cac, thanh cac, tranh cai
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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 chieu xanh - canh tranh cac ((phuong cong) OR (phuong dong)) ((dan than) OR (ban than)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh tranh cac ((phuong cong) or (phuong dong)) ((dan than) OR (ban than)) cap~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh tranh cac ((phuong cong) or (phuong dong)) ((dan than) OR (ban than)) cap*.