Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
truong va » truong dai, truong cao, truong dao
van thang » van thanh, van khang, van hang
thang cap » thong cap, than cap, trung cap
trung ha » trung hoc, trung tam, trung cap
cong van » cong vang, cong san, song van

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 ha) or (truong va)) nhung cong van thang cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung ha) OR (truong va)) nhung cong van thang cap*.