Perhaps you should try some spelling variations:
"Multi national research : July 2009" » "Multi educational research : July 2009"
"multi vaccine research : july 2009" » "multi action research : july 2009", "anti vaccine research : july 2009", "multi vaccine research : july 2006", "multi vaccine research : july 2013", "multi vaccine research : july 2012"
multi national » _ multinational, multinationals _, _ multinationals

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi vaccine research : july 2009") or ("Multi national research : July 2009"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi vaccine research : july 2009") OR ("Multi national research : July 2009")).
• Removing quotes may allow a broader search: (( multi vaccine research : july 2009 ) or ( Multi national research : July 2009 )).
• Adding a wildcard symbol may retrieve word variants: (("multi vaccine research : july 2009") or ("Multi national research : July 2009"))*.