Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh
nhung cong » dung cong, thong cong, hang cong
den thanh » de thanh, dinh thanh, dong thanh
trinh he » trinh han, trinh hoa, trinh thi
cong dan » cong san, cong tan, huong dan
tinh he » hinh he, tinh ha, tich he
dan van » dang van, doan van, dao van

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) OR (den thanh)) - canh ((tinh he) OR (trinh he)) nhung cong dan van ban~.
• Adding a wildcard symbol may retrieve word variants: doan ((tien thanh) or (den thanh)) - canh ((tinh he) or (trinh he)) nhung cong dan van ban*.