Perhaps you should try some spelling variations:
"multi educational research : july 2012" » "maxi educational research : july 2012", "multi generational research : july 2012", "art educational research : july 2012", "multi educational research : july 2013"
"multi national research : july 2011" » "multinationals _ research : july 2011", "multi national research : july 2013", "multi national research : july 2015", "multi national 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: (("multi national research : july 2011") OR ("multi educational research : july 2012"))~.
• Removing quotes may allow a broader search: (( multi national research : july 2011 ) or ( multi educational research : july 2012 ))~.
• Adding a wildcard symbol may retrieve word variants: (("multi national research : july 2011") or ("multi educational research : july 2012"))*.