Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doan tien » doan thien, doanh tien, toan tien
trinh hoa » trinh do, trinh han
trinh he » trinh han, trinh thi, trinh ky
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 thinh - hanh ((trinh he) OR (trinh hoa)) nhung cong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: doan tien thinh - hanh ((trinh he) or (trinh hoa)) nhung cong dan toan ban*.