Perhaps you should try some spelling variations:
sector research » doctoral research, history research, aspects research
factor research » factors research, actors research, facts research
multi sector » multi sectoral
multi factor » multi actor, _ multifactor, multi faceted
july 2009 » july 2008, july 2007, july 2019
july 2006 » july 2008, july 2007, 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 sector research : july 2009 ) or ( multi factor research : july 2006 ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( multi sector research : july 2009 ) OR ( multi factor research : july 2006 )).
• Adding a wildcard symbol may retrieve word variants: (( multi sector research : july 2009 ) or ( multi factor research : july 2006 ))*.