Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
nhung cong » dung cong, thong cong, hang cong
doan tien » doan thien, doanh tien, toan tien
trinh han » trinh quan
trinh thi » trinh tai, dinh thi, trinh tu
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
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 - hanh ((trinh han) OR (trinh thi)) nhung cong dan ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tien thanh - hanh ((trinh han) or (trinh thi)) nhung cong dan ((toan cau) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: doan tien thanh - hanh ((trinh han) or (trinh thi)) nhung cong dan ((toan cau) OR (toan cao))*.