Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
tranh van » tran van, trinh van, thanh van
dang cong » dung cong
van dang » van dong, van dung, van nang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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 dang cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - canh tranh van dang cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - canh tranh van dang cong san toan cao*.