Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
dong cong » duong cong, dung cong, dang cong
giang van » hoang van, dang van, giang day
ho chieu » theo chieu, hoc thieu, mot chieu
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
gian dan » gian lang

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: ((doi chieu) OR (ho chieu)) sang - canh tranh cua dong cong san ((gian dan) OR (giang van))~.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) sang - canh tranh cua dong cong san ((gian dan) or (giang van))*.