Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
van dung » van dong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than man » than ma, thanh san, tran manh

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: ho chieu sang - thanh trung ((((van dung) OR (tin dung))) OR (xay dung)) cong dan than man~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung ((((van dung) OR (tin dung))) or (xay dung)) cong dan than man~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((((van dung) OR (tin dung))) or (xay dung)) cong dan than man*.