Perhaps you should try some spelling variations:
manpower resources » power resources, manager resources, power resource
manage resources » managed resources, manage resource, language resources
manager resource » managing resource, management resource, managing resources
12 costs » 12 cost, 12 codes
21 costs » 21 cost, 1 costs, 11 costs
2 costs » _ costs, 2 cost, 4 costs

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 (((unmanaged resources) OR (((manage resources) OR (manager resource)))))) %((((12 costs) OR (2 costs))) OR (21 costs))%22.
• Adding a wildcard symbol may retrieve word variants: %((manpower resources) or (((unmanaged resources) or (((manage resources) or (manager resource)))))) %((((12 costs) or (2 costs))) or (21 costs))%22*.