Perhaps you should try some spelling variations:
"state section" » "states section", "state reaction", "state action"
"state actor" » "state action", "state sector", "state after"
"state actors" » "state actions", "state sectors", "state afters", "state factors"
"state acts" » "state tracts", "late acts", "state action"

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