Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thien danh » thien anh, thien dang, thien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dong vang » dong bang, dong van, cong vang
ban ban » ban banh, van ban, ban dan
can ban » van ban, toan ban

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) OR (thien danh)) - hanh tranh cua cong dong vang ((ban ban) OR (can ban))~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (thien danh)) - hanh tranh cua cong dong vang ((ban ban) or (can ban))*.