Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
dung cong » dung trong
van phong » van dong, hai phong
tam dung » tam duong, tac dung, tan dung
van phan » van thanh, luan phan, van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) OR (chieu xanh)) - thanh trung tam dung cong ((van phan) or (van phong)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu xanh)) - thanh trung tam dung cong ((van phan) OR (van phong)) dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu xanh)) - thanh trung tam dung cong ((van phan) or (van phong)) dau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu xanh)) - thanh trung tam dung cong ((van phan) or (van phong)) dau*.