Perhaps you should try some spelling variations:
manpower resources » power resources, manager resources, power resource
managing resource » managing resources, management resource
manager resource » management resource, unmanaged resources, managing resources
27 costs » 2.7 costs, 27 costas, 17 costs
23 costs » 2.3 costs, 3 costs, 13 costs
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 (((((manager resource) OR (managing resource))) OR (((manager resource) OR (managing resource))s)))) %((((((27 costs) OR (23 costs))) OR (2 costs))) OR (21 costs))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((manpower resources) or (((((manager resource) OR (managing resource))) or (((manager resource) OR (managing resource))s)))) %((((((27 costs) or (23 costs))) or (2 costs))) or (21 costs))%22".
• Adding a wildcard symbol may retrieve word variants: %((manpower resources) or (((((manager resource) OR (managing resource))) or (((manager resource) OR (managing resource))s)))) %((((((27 costs) or (23 costs))) or (2 costs))) or (21 costs))%22*.