Perhaps you should try some spelling variations:
manpower resources » power resources, power resource, manager resource
manager resources » manager resource, managed resources, manage resources
26 costs » 2.6 costs, 26 cosets, 6 costs
21 costs » 21 cost, 1 costs, 11 costs
_ costs » _ cost

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: %((manpower resources) OR (manager resources)) %((((26 costs) OR (_ costs))) OR (21 costs))%22.
• Adding a wildcard symbol may retrieve word variants: %((manpower resources) or (manager resources)) %((((26 costs) or (_ costs))) or (21 costs))%22*.