Perhaps you should try some spelling variations:
function research » fiction research, action research, union research
vaccine research » medicine research
meets function » greens function, its function, meets action
a vaccine » _ vaccine, 1 vaccine, 2 vaccine
july 2009 » july 2008, july 2007, july 2019
july 2006 » july 2008, july 2007, 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: (( a vaccine research : july 2009 ) or ( meets function research : july 2006 ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( a vaccine research : july 2009 ) OR ( meets function research : july 2006 )).
• Adding a wildcard symbol may retrieve word variants: (( a vaccine research : july 2009 ) or ( meets function research : july 2006 ))*.