Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
phan dung » phan ung, phan dang, chan dung
luan dong » luan cong, quan dong, luan nong
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cau » toan cau, phan cau, than cap

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: doi ((chieu xanh) OR (hieu lang)) - phan dung luan dong ((cong ban) OR (cong san)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (hieu lang)) - phan dung luan dong ((cong ban) OR (cong san)) than cau~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (hieu lang)) - phan dung luan dong ((cong ban) OR (cong san)) than cau*.