Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong bang » cuong bang, hong bang, cong lang
dong bang » dong san
thanh cac » hanh cac, thanh bac, thanh ca
cot lieu » co lieu, vat lieu, so lieu
co hieu » cao hieu, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cot lieu) or (co hieu)) tinh - thanh trung cua nhung ((cong bang) or (dong bang)) thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cot lieu) OR (co hieu)) tinh - thanh trung cua nhung ((cong bang) OR (dong bang)) thanh cac.
• Adding a wildcard symbol may retrieve word variants: ((cot lieu) or (co hieu)) tinh - thanh trung cua nhung ((cong bang) or (dong bang)) thanh cac*.