Perhaps you should try some spelling variations:
service research » services research, rice research, science research
action research » national research
multi service » multi device, multiple service, multiple services
multi action » multi actor, multi option, multi location
july 2007 » july 2008, july 2013, july 2020
july 2012 » 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 service research : july 2007 ) or ( multi action research : july 2012 ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( multi service research : july 2007 ) OR ( multi action research : july 2012 )).
• Adding a wildcard symbol may retrieve word variants: (( multi service research : july 2007 ) or ( multi action research : july 2012 ))*.