Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
dan chan » dan gian, dan ca, van chat
dan can » dan canh, dan ca, ban can

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