Perhaps you should try some spelling variations:
"multi action research : june 2011" » "multi national research : june 2011", "multi actor research : june 2011", "multi location research : june 2011", "multi factor research : june 2011", "multi action research : june 2013", "multi action research : june 2014", "multi action research : june 2010"
"multi option research : june 2011" » "multi opinion research : june 2011", "multi optics research : june 2011", "multi actions research : june 2011", "multi location research : june 2011", "multi population research : june 2011", "multi ratios research : june 2011", "multi option research : june 2013", "multi option research : june 2014", "multi option research : june 2010"

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 : june 2011") OR ("multi option research : june 2011"))~.
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• Removing quotes may allow a broader search: (( multi action research : june 2011 ) OR ( multi option research : june 2011 )).
• Adding a wildcard symbol may retrieve word variants: (("multi action research : june 2011") OR ("multi option research : june 2011"))*.