Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
thanh dung » thanh duong, thanh tung, thanh hung
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
dan chinh » dang chinh, lan chinh, van chinh
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh trung thanh dung cong ((dan chinh) or (hanh chinh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh trung thanh dung cong ((dan chinh) OR (hanh chinh)) cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh trung thanh dung cong ((dan chinh) or (hanh chinh)) cau*.