Perhaps you should try some spelling variations:
"multi accident research : june 2011" » "multi current research : june 2011", "multi vaccine research : june 2011", "multi client research : june 2011", "multi accident research : june 2013", "multi accident research : june 2014", "multi accident research : june 2010"
"multi recent research : july 2011" » "multi current research : july 2011", "mali recent research : july 2011", "multi agent research : july 2011", "multi client research : july 2011", "multi recent research : july 2013", "multi recent research : july 2012", "multi recent research : july 2015"

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