Perhaps you should try some spelling variations:
"multi actors research : july 2008" » "multi factors research : july 2008", "multi actions research : july 2008", "multi author's research : july 2008", "multi actor research : july 2008", "multi acteurs research : july 2008", "multiple actors research : july 2008", "multi actors research : july 2013", "multi actors research : july 2012", "multi actors research : july 2020"
"multi factor research : july 2006" » "multi factors research : july 2006", "multi sector research : july 2006", "multi facts research : july 2006", "multi actor research : july 2006", "_ multifactor research : july 2006", "multi factor research : july 2007", "multi factor research : july 2009", "multi factor research : july 2013"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi actors research : july 2008") or ("multi factor research : july 2006"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi actors research : july 2008") OR ("multi factor research : july 2006")).
• Removing quotes may allow a broader search: (( multi actors research : july 2008 ) or ( multi factor research : july 2006 )).
• Adding a wildcard symbol may retrieve word variants: (("multi actors research : july 2008") or ("multi factor research : july 2006"))*.