Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
doan tien » doan thien, doanh tien, toan tien
tranh he » tranh ha, tinh he, trang ha
trinh he » trinh han, trinh hoa, trinh thi
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: doan tien thanh - canh ((tranh he) OR (trinh he)) nhung ((cong dan) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tien thanh - canh ((tranh he) or (trinh he)) nhung ((cong dan) OR (cong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: doan tien thanh - canh ((tranh he) or (trinh he)) nhung ((cong dan) OR (cong san)) toan cau*.