Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
ho chiet » ho chieu, ho thiet, hoc thiet
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh trung cua thong ((cong san) or (cong tan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh trung cua thong ((cong san) OR (cong tan)) phan cau.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung cua thong ((cong san) or (cong tan)) phan cau*.