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
trung va » trang va, trung tam, trung cap
trung ha » trung hoc, trung tam, trung cap
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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