Perhaps you should try some spelling variations:
"multi accident research : july 2009" » "multi current research : july 2009", "multi recent research : july 2009", "multi vaccine research : july 2009", "multi client research : july 2009", "multi accident research : july 2008", "multi accident research : july 2007", "multi accident research : july 2019"
"maxi educational research : july 2009" » "praxis educational research : july 2009", "meals educational research : july 2009", "art educational research : july 2009", "maxi educational research : july 2008", "maxi educational research : july 2007", "maxi educational research : july 2019"

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