Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
hanh trinh » canh tranh, hanh chinh
doan tien » doan thien, doanh tien, toan tien
he nhung » hee nhung, me nhung, hien nhung
ve nhung » va nhung, tu nhung
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van 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: doan tien thanh - hanh trinh ((he nhung) OR (ve nhung)) cong san ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tien thanh - hanh trinh ((he nhung) or (ve nhung)) cong san ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doan tien thanh - hanh trinh ((he nhung) or (ve nhung)) cong san ((toan cau) OR (toan ban))*.