Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
ban cong » bang cong, van cong, phan cong
cong san » cong tac
san toan » van toan, dan toan, manh toan
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 ((dieu hanh) or (chieu sach)) - thanh trung cua ban cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((dieu hanh) OR (chieu sach)) - thanh trung cua ban cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (chieu sach)) - thanh trung cua ban cong san toan cau*.