Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong dao » truong dai, truong cao, truong bo
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap

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 tam) or (truong dao)) dung cong tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung tam) OR (truong dao)) dung cong tan than cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung tam) or (truong dao)) dung cong tan than cao*.