Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
dung duong » dong duong, dung dung, dung luong
doi chieu » doc hieu, doi chi, ho chieu
trung cap » trung tam
dung dong » dung cong, vung dong, dung trong
van tan » van tuan, van ban, van tai
tan cao » toan cao, tao cao, tay cao

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 ((trung cap) or (truong cao)) ((dung duong) OR (dung dong)) van tan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trung cap) OR (truong cao)) ((dung duong) OR (dung dong)) van tan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trung cap) or (truong cao)) ((dung duong) OR (dung dong)) van tan cao*".