Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
tieu xanh » tieu danh, chieu xanh, dieu hanh
van hoang » van hoan, quan hoang, tran hoang
van hang » van khang, van thang, ban hang
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 trinh ((van hang) OR (van hoang)) cong tac ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh trinh ((van hang) OR (van hoang)) cong tac ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh trinh ((van hang) OR (van hoang)) cong tac ((toan cau) or (toan tap))*.