Perhaps you should try some spelling variations:
"new vaccine research : july 2009" » "new medicine research : july 2009", "novel vaccine research : july 2009", "anti vaccine research : july 2009", "new vaccine research : july 2008", "new vaccine research : july 2007", "new vaccine research : july 2006"
"meet climate research : july 2019" » "best climate research : july 2019", "deep climate research : july 2019", "heat climate research : july 2019", "meet climate research : july 2013", "meet climate research : july 2012", "meet climate research : july 2015"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("new vaccine research : july 2009") OR ("meet climate research : july 2019"))~.
• Removing quotes may allow a broader search: (( new vaccine research : july 2009 ) or ( meet climate research : july 2019 ))~.
• Adding a wildcard symbol may retrieve word variants: (("new vaccine research : july 2009") or ("meet climate research : july 2019"))*.