Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung quan » truong quan, trung tuan, truong quang
trong quan » thong quan, tong quan, thong quang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh ((trung quan) OR (trong quan)) dung ((cong tan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung quan) OR (trong quan)) dung ((cong tan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung quan) OR (trong quan)) dung ((cong tan) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung quan) OR (trong quan)) dung ((cong tan) or (cong san)) toan cao*.