Perhaps you should try some spelling variations:
"multi accident research : june 2010" » "multi current research : june 2010", "multi recent research : june 2010", "multi vaccine research : june 2010", "multi client research : june 2010", "multi accident research : june 2013", "multi accident research : june 2014", "multi accident research : june 2012"
"multi location research : june 2011" » "multi locations research : june 2011", "multi education research : june 2011", "multi action research : june 2011", "multi option research : june 2011", "multiple locations research : june 2011", "multiplication _ research : june 2011", "multi location research : june 2013", "multi location research : june 2014", "multi location research : june 2012"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi accident research : june 2010") or ("multi location research : june 2011"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi accident research : june 2010") OR ("multi location research : june 2011")).
• Removing quotes may allow a broader search: (( multi accident research : june 2010 ) or ( multi location research : june 2011 )).
• Adding a wildcard symbol may retrieve word variants: (("multi accident research : june 2010") or ("multi location research : june 2011"))*.