Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
tran tan » tran tuan, tran van, tran thanh

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 xanh) or (chinh sach)) - thanh trung cua thong ((cong ban) OR (cong san)) tran tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chinh sach)) - thanh trung cua thong ((cong ban) OR (cong san)) tran tan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chinh sach)) - thanh trung cua thong ((cong ban) OR (cong san)) tran tan".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chinh sach)) - thanh trung cua thong ((cong ban) OR (cong san)) tran tan*.