Perhaps you should try some spelling variations:
"multi action research : july 2012" » "multi national research : july 2012", "multi actor research : july 2012", "multi option research : july 2012", "multi location research : july 2012", "multi action research : july 2013"
"multi action research : july 2011" » "multi national research : july 2011", "multi actor research : july 2011", "multi option research : july 2011", "multi location research : july 2011", "multi action research : july 2013", "multi action research : july 2015", "multi action research : july 2019"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi action research : july 2012") or ("multi action research : july 2011"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi action research : july 2012") OR ("multi action research : july 2011")).
• Removing quotes may allow a broader search: (( multi action research : july 2012 ) or ( multi action research : july 2011 )).
• Adding a wildcard symbol may retrieve word variants: (("multi action research : july 2012") or ("multi action research : july 2011"))*.