Perhaps you should try some spelling variations:
"meet vaccine research : july 2008" » "meet medicine research : july 2008", "media vaccine research : july 2008", "ant vaccine research : july 2008", "mr vaccine research : july 2008", "meet vaccine research : july 2013", "meet vaccine research : july 2012", "meet vaccine research : july 2020"
"text related research : july 2007" » "text based research : july 2007", "text water research : july 2007", "heat related research : july 2007", "tdt related research : july 2007", "context related research : july 2007", "text related research : july 2013", "text related research : july 2012", "text related research : 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: (("text related research : july 2007") or ("meet vaccine research : july 2008"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("text related research : july 2007") OR ("meet vaccine research : july 2008")).
• Removing quotes may allow a broader search: (( text related research : july 2007 ) or ( meet vaccine research : july 2008 )).
• Adding a wildcard symbol may retrieve word variants: (("text related research : july 2007") or ("meet vaccine research : july 2008"))*.