Perhaps you should try some spelling variations:
"anti vaccine research : july 2009" » "anti action research : july 2009", "aids vaccine research : july 2009", "new vaccine research : july 2009", "anti vaccine research : july 2006", "anti vaccine research : july 2013", "anti vaccine research : july 2012"
"multi climate research : july 2009" » "mali climate research : july 2009", "bali climate research : july 2009", "multi climate research : july 2006", "multi climate research : july 2013", "multi climate research : july 2012"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("anti vaccine research : july 2009") OR ("multi climate research : july 2009"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"anti vaccine research : july 2009\") OR (\"multi climate research : july 2009\"))".
• Removing quotes may allow a broader search: (( anti vaccine research : july 2009 ) OR ( multi climate research : july 2009 )).
• Adding a wildcard symbol may retrieve word variants: (("anti vaccine research : july 2009") OR ("multi climate research : july 2009"))*.