Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
cua tuong » cua truong, cua thuong, cua huong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
dong tai » luong tai, hang tai, dong ha
cong tac » cong ty
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: theo tieu xanh - anh tang cua tuong ((((dong tai) OR (dung tai))) OR (cong tac)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - anh tang cua tuong ((((dong tai) OR (dung tai))) or (cong tac)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh tang cua tuong ((((dong tai) OR (dung tai))) or (cong tac)) toan cau*.