Perhaps you should try some spelling variations:
care personnel » le personnel
26 economics » 2.6 economics, 6 economics, 16 economics
2 personnel » _ personnel, 7 personnel, 2 personal
a personnel » _ personnel, du personnel, anti personnel
2.2 human » 22 human, 12 human
21 human » 1 human, 11 human

Try widening your search to All Fields.

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: %22business %26 economics %((((2.2 human) OR (((20 human) OR (10 human))))) OR (21 human)) resources %((2 personnel) OR (((a personnel) OR (care personnel)))) management%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22business %26 economics %((((2.2 human) or (((20 human) or (10 human))))) or (21 human)) resources %((2 personnel) or (((a personnel) OR (care personnel)))) management%22".
• Adding a wildcard symbol may retrieve word variants: %22business %26 economics %((((2.2 human) or (((20 human) or (10 human))))) or (21 human)) resources %((2 personnel) or (((a personnel) OR (care personnel)))) management%22*.