Perhaps you should try some spelling variations:
"state actions" » "state action", "state reactions", "state actors"
"state sector" » "estate sector", "state vector", "state vectors"
"state actor" » "state actors", "state action", "state vector"

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: (((("state actor") OR ("state sector"))) OR ((("state actions") OR ("state actions")))).
• Removing quotes may allow a broader search: (((( state actor ) or ( state sector ))) or ((( state actions ) or ( state actions )))).
• Adding a wildcard symbol may retrieve word variants: (((("state actor") or ("state sector"))) or ((("state actions") or ("state actions"))))*.