Perhaps you should try some spelling variations:
hien tinh » khien tinh, thien tinh, bien tinh
tranh cua » manh cua
doanh cua » doanh luan
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - canh ((tranh cua) or (doanh cua)) dung cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - canh ((tranh cua) OR (doanh cua)) dung cong dan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - canh ((tranh cua) or (doanh cua)) dung cong dan phan cau*.