Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung cap » truong cao, trung tam
cap phung » chap phong, tap phuong, cac chung
cong tac » cong ty
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: theo chieu sach - thanh trung cap phung ((cong san) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cap phung ((cong san) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cap phung ((cong san) or (cong tac)) toan cao*.