Perhaps you should try some spelling variations:
"post accident research : july 2012" » "post current research : july 2012", "post recent research : july 2012", "post vaccine research : july 2012", "post incident research : july 2012", "plant accident research : july 2012", "road accident research : july 2012", "post accident research : july 2013"
"multi action research : july 2012" » "multi national research : july 2012", "multi actor research : july 2012", "multi option research : july 2012", "multi location research : july 2012", "multi action research : july 2013"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("post accident research : july 2012") or ("multi action research : july 2012"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("post accident research : july 2012") OR ("multi action research : july 2012")).
• Removing quotes may allow a broader search: (( post accident research : july 2012 ) or ( multi action research : july 2012 )).
• Adding a wildcard symbol may retrieve word variants: (("post accident research : july 2012") or ("multi action research : july 2012"))*.