Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
hien tinh » khien tinh, bien tinh, dien tinh
tranh cua » doanh cua, manh cua
dang cong » dung cong
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan
than ban » thanh ban, toan ban, than man

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 ((hien tinh) OR (thien tinh)) - canh tranh cua dang cong dan ((than ban) OR (thanh san))~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) or (thien tinh)) - canh tranh cua dang cong dan ((than ban) or (thanh san))*.