Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
cong doan » cong dan, dong doanh, cong san
cong hoan » cong hoa, dong hoa, cong san
cua dang » cua cong, cua ban
hoc thi » hoc thai, hoc chi, hoc khi
hoc tai » hoc dai, hoc tap, hoc bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thi) or (hoc tai)) thanh - hanh doanh cua dang ((cong doan) OR (cong hoan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thi) OR (hoc tai)) thanh - hanh doanh cua dang ((cong doan) OR (cong hoan)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thi) or (hoc tai)) thanh - hanh doanh cua dang ((cong doan) OR (cong hoan)) phan tu".
• Adding a wildcard symbol may retrieve word variants: ((hoc thi) or (hoc tai)) thanh - hanh doanh cua dang ((cong doan) OR (cong hoan)) phan tu*.