Perhaps you should try some spelling variations:
"post accident research : july 2006" » "post current research : july 2006", "post recent research : july 2006", "post vaccine research : july 2006", "post incident research : july 2006", "plant accident research : july 2006", "road accident research : july 2006", "post accident research : july 2008", "post accident research : july 2009", "post accident research : july 2013"
"meet climate research : july 2007" » "best climate research : july 2007", "deep climate research : july 2007", "heat climate research : july 2007", "meet climate research : july 2008", "meet climate research : july 2013", "meet climate research : july 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: (("meet climate research : july 2007") or ("post accident research : july 2006"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("meet climate research : july 2007") OR ("post accident research : july 2006")).
• Removing quotes may allow a broader search: (( meet climate research : july 2007 ) or ( post accident research : july 2006 )).
• Adding a wildcard symbol may retrieve word variants: (("meet climate research : july 2007") or ("post accident research : july 2006"))*.