Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua tong » cua cong, cua dong, cua nong
cong van » cong vang, song van, cong tan
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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 xanh) OR (hieu lang)) - canh tranh cua tong ((cong van) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu lang)) - canh tranh cua tong ((cong van) OR (cong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu lang)) - canh tranh cua tong ((cong van) OR (cong san)) toan cau*.