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 thanh » ban thanh, van tuan
thanh lap » thanh san, phan lap, thanh hai
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 hoc) OR (trung quoc))) or (truong va)) nhung cong van thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((((trung hoc) OR (trung quoc))) OR (truong va)) nhung cong van thanh lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((((trung hoc) OR (trung quoc))) or (truong va)) nhung cong van thanh lap*".