Perhaps you should try some spelling variations:
"meet vaccine research : july 2006" » "meet medicine research : july 2006", "media vaccine research : july 2006", "ant vaccine research : july 2006", "mr vaccine research : july 2006", "meet vaccine research : july 2008", "meet vaccine research : july 2007", "meet vaccine research : july 2009"
"bali climate research : july 2011" » "mali climate research : july 2011", "daily climate research : july 2011", "early climate research : july 2011", "bali climate research : july 2013", "bali climate research : july 2012", "bali climate research : july 2015"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("meet vaccine research : july 2006") OR ("bali climate research : july 2011"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"meet vaccine research : july 2006\") OR (\"bali climate research : july 2011\"))".
• Removing quotes may allow a broader search: (( meet vaccine research : july 2006 ) OR ( bali climate research : july 2011 )).
• Adding a wildcard symbol may retrieve word variants: (("meet vaccine research : july 2006") OR ("bali climate research : july 2011"))*.