Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
gian lang » gian dan
lang luan » tang luan, hang luan, bang luan
van cong » van dong, van phong, phan cong
cong dan » cong san, cong tan, huong dan
dan pha » dan phan, dan pho, ban pha
pha tap » pham tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sang - gian lang luan van cong dan pha tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - gian lang luan van cong dan pha tap*.