Perhaps you should try some spelling variations:
"multiple positions research : june 2011" » "multiple locations research : june 2011", "multiple options research : june 2011", "multiple solutions research : june 2011", "multiple transitions research : june 2011", "multiple positions research : june 2013", "multiple positions research : june 2014", "multiple positions research : june 2010"
"multi action research : july 2009" » "multi national research : july 2009", "multi actor research : july 2009", "multi option research : july 2009", "multi location research : july 2009", "multi action research : july 2008", "multi action research : july 2007", "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: (("multiple positions research : june 2011") OR ("multi action research : july 2009"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"multiple positions research : june 2011\") OR (\"multi action research : july 2009\"))".
• Removing quotes may allow a broader search: (( multiple positions research : june 2011 ) OR ( multi action research : july 2009 )).
• Adding a wildcard symbol may retrieve word variants: (("multiple positions research : june 2011") OR ("multi action research : july 2009"))*.