Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
doanh cua » doanh luan
cong cong » cong dong, trong cong, dung cong
manh cua » ban cua
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - hanh ((manh cua) OR (doanh cua)) cong cong ((dan than) or (dan chan)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((manh cua) OR (doanh cua)) cong cong ((dan than) OR (dan chan)) man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((manh cua) OR (doanh cua)) cong cong ((dan than) or (dan chan)) man".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((manh cua) OR (doanh cua)) cong cong ((dan than) or (dan chan)) man*.