Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
ban thanh » ban hanh, ban hang
doan ban » doanh ban, toan ban, doan van
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
toan cao » toan ban
he hang » he zhang, le hang, hiem hang
te hang » te bang, ty hang, le hang

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: doan ban thanh - hanh trinh ((he hang) OR (te hang)) cong dan ((toan tap) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan ban thanh - hanh trinh ((he hang) OR (te hang)) cong dan ((toan tap) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: doan ban thanh - hanh trinh ((he hang) OR (te hang)) cong dan ((toan tap) or (toan cao))*.