Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
tranh phan » thanh phan, trinh phan, thanh pham
dan nphan » dan phan, dan chan, van phan
nphan van » nhan van, pham van, nhan va
phan van » pham van, thanh van, luan van
van cong » van dong, van phong, phan cong
cong dan » cong san, cong tan, huong dan

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 tinh) or (chieu sach)) - canh tranh phan van cong dan nphan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (chieu sach)) - canh tranh phan van cong dan nphan van*.