Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
dan van » dang van, doan van, dao van
van tu » van thu, van du, ban tu

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 sach - canh tranh cua ((hang cong) or (dang cong)) dan van tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh cua ((hang cong) OR (dang cong)) dan van tu.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh cua ((hang cong) or (dang cong)) dan van tu*.