Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trung » thanh trung, hanh trang, manh trung
cuong dung » tuong duong, thong dung
hoc chieu » hoc thieu, ho chieu, hoc hien
cong tan » cong tac, cong thanh, cong ty
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: hoc chieu xanh - hanh trung ((cuong dung) OR (ung dung)) ((cong tan) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh trung ((cuong dung) OR (ung dung)) ((cong tan) or (cong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh trung ((cuong dung) OR (ung dung)) ((cong tan) or (cong san)) toan cau*.