Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
thang cong » thanh cong, thang long, thong cong
tranh van » tran van, trinh van, thanh van
van thang » van thanh, van khang, van hang
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - canh tranh van thang cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - canh tranh van thang cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - canh tranh van thang cong san ((toan cau) or (toan ban))*.