Perhaps you should try some spelling variations:
"scale options research : july 2012" » "scale actions research : july 2012", "scale optics research : july 2012", "scale operations research : july 2012", "share options research : july 2012", "care options research : july 2012", "case options research : july 2012", "scale options research : july 2013"
"state action research : july 2009" » "state national research : july 2009", "state actors research : july 2009", "state action research : july 2008", "state action research : july 2007", "state action research : july 2019"

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 action research : july 2009") OR ("scale options research : july 2012"))~.
• Removing quotes may allow a broader search: (( state action research : july 2009 ) or ( scale options research : july 2012 ))~.
• Adding a wildcard symbol may retrieve word variants: (("state action research : july 2009") or ("scale options research : july 2012"))*.