Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
trung tuan » trung thanh, trung tam, tran tuan
dung doanh » dung dan, dung dong
doanh luan » doanh nhan
trung cua » truong cua, trung cap, dung cua
dung dung » ung dung, dung ung, dung dong
luan cu » tuan cu, luan chi, quan cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu sang)) - thanh ((trung cua) OR (trung tuan)) dung dung doanh luan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - thanh ((trung cua) OR (trung tuan)) dung dung doanh luan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu sang)) - thanh ((trung cua) OR (trung tuan)) dung dung doanh luan cu".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - thanh ((trung cua) OR (trung tuan)) dung dung doanh luan cu*.