Perhaps you should try some spelling variations:
"meet vaccine research : july 2012" » "meet medicine research : july 2012", "media vaccine research : july 2012", "ant vaccine research : july 2012", "mr vaccine research : july 2012", "meet vaccine research : july 2013"
"meet action research : july 2006" » "meet national research : july 2006", "meets action research : july 2006", "meet section research : july 2006", "reset action research : july 2006", "meet action research : july 2008", "meet action research : july 2007", "meet action research : july 2009"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"meet vaccine research : july 2012\") OR (\"meet action research : july 2006\"))~".
• Removing quotes may allow a broader search: (( meet vaccine research : july 2012 ) OR ( meet action research : july 2006 ))~.
• Adding a wildcard symbol may retrieve word variants: (("meet vaccine research : july 2012") OR ("meet action research : july 2006"))*.