Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
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 - thanh ((tung cua) or (dung cua)) nhung cong ((dan than) OR (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((tung cua) OR (dung cua)) nhung cong ((dan than) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((tung cua) or (dung cua)) nhung cong ((dan than) OR (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((tung cua) or (dung cua)) nhung cong ((dan than) OR (dan chan)) cau*.