Perhaps you should try some spelling variations:
vaccine research » medicine research
recent research » current research
meet recent » most recent, market recent, modest recent
july 2007 » july 2013, july 2012, july 2020
july 2009 » july 2019, july 2006, july 2013
july 2008 » july 2013, july 2012, july 2020

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( meet recent research : july 2007 ) or ( media vaccine research : ((july 2009) OR (july 2008)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( meet recent research : july 2007 ) OR ( media vaccine research : ((july 2009) OR (july 2008)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( meet recent research : july 2007 ) or ( media vaccine research : ((july 2009) OR (july 2008)) ))".
• Adding a wildcard symbol may retrieve word variants: (( meet recent research : july 2007 ) or ( media vaccine research : ((july 2009) OR (july 2008)) ))*.