Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
trung van » truong van, trong van, trung va
dung cong » dung trong
van khang » van khanh, van thanh, van quang
van dung » van dong, xay dung, tin dung
van hanh » van thanh, ban hanh, van anh

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 sang) or (hieu lang)) - thanh trung van dung cong ((van khang) or (van hanh)) cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh trung van dung cong ((van khang) OR (van hanh)) cu.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - thanh trung van dung cong ((van khang) or (van hanh)) cu*.