Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh hang » thanh hang, hang hang, hanh mang
cua nhung » va nhung
hanh han » hanh nhan, hanh phan, hanh san
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 - ((hanh hang) OR (hanh han)) cua nhung ((cong thanh) OR (cong tac)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh hang) OR (hanh han)) cua nhung ((cong thanh) or (cong tac)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh hang) OR (hanh han)) cua nhung ((cong thanh) or (cong tac)) toan cau*.