Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh thanh, dong doanh
doanh hoan » doanh khoa, doanh nhan, doanh luan
tran doanh » toan doanh, trai doanh, tran danh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man
doi chi » doi khi
chi anh » chi danh, chi hanh, thi anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi anh - ((((doanh doanh) OR (doanh hoan))) or (tran doanh)) cua dung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi anh - ((((doanh doanh) OR (doanh hoan))) OR (tran doanh)) cua dung cong dan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi anh - ((((doanh doanh) OR (doanh hoan))) or (tran doanh)) cua dung cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: doi chi anh - ((((doanh doanh) OR (doanh hoan))) or (tran doanh)) cua dung cong dan than ban*.