Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » thong cong, hang cong, nhung don
hien hanh » dieu hanh
doanh cua » doanh luan
dung cong » dung trong
tac thanh » bac thanh, cac thanh, tcc thanh
tac than » tam than, tac nhan, bac thanh

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

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