Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cua » truong ca, truong quan, truong cao
duong cong » dung cong, luong cong, duong trong
doi chieu » doc hieu, doi chi, ho chieu
trung cua » trung tuan, trung cap, dung cua
dong cong » dung cong, dang cong, cong cong
khan ap » khan cap, han ap, khan dam

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