Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
dang cong » dung cong
doi lieu » duoc lieu, doi chieu, tai lieu
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi lieu) OR (du lieu)) tinh - thanh trung cua dang cong tan ((chan cau) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi lieu) OR (du lieu)) tinh - thanh trung cua dang cong tan ((chan cau) or (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: ((doi lieu) OR (du lieu)) tinh - thanh trung cua dang cong tan ((chan cau) or (phan cau))*.