Perhaps you should try some spelling variations:
trieu minh » trieu tinh, trien minh, trien kinh
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh cua » doanh cua, manh cua
tong dan » tuong dan, thong dan, trong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau
cua han » cua hang, cua nhan, cua phan

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 ((trieu minh) OR (chieu xanh)) - canh tranh cua han tong dan chan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu minh) or (chieu xanh)) - canh tranh cua han tong dan chan cau*.