Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cac » truong cao, trong cac, truong ca
cong thanh » dong thanh, cong trinh, truong thanh
trung cac » trung cap, trong cac, trung ca
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong ty
toan cau » 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 cac) OR (truong cac)) dan ((cong tan) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung cac) OR (truong cac)) dan ((cong tan) OR (cong thanh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung cac) OR (truong cac)) dan ((cong tan) or (cong thanh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung cac) OR (truong cac)) dan ((cong tan) or (cong thanh)) toan cau*.