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 quan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tien thinh - hanh ((trinh hoa) OR (trinh han)) nhung cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: doan tien thinh - hanh ((trinh hoa) OR (trinh han)) nhung cong dan toan cau*.