Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » thong cong, hang cong, nhung don
doan tien » doan thien, doanh tien, toan tien
trinh tai » trinh toan, trinh tu, trinh han
dung cong » dung trong
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: doan tien thinh - hanh trinh tai ((nhung cong) OR (dung cong)) san ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tien thinh - hanh trinh tai ((nhung cong) or (dung cong)) san ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: doan tien thinh - hanh trinh tai ((nhung cong) or (dung cong)) san ((toan cau) OR (toan tap))*.