Perhaps you should try some spelling variations:
plants research » class research, planning research, changes research
client research » accident research, climate research, current research
multi plants » multi plant, multi party, multi player
multi client » multi agent, multi plant
july 2006 » july 2008, july 2007, july 2009
july 2011 » july 2013, july 2012, july 2015

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( multi plants research : july 2006 ) or ( multi client research : july 2011 ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( multi plants research : july 2006 ) OR ( multi client research : july 2011 )).
• Adding a wildcard symbol may retrieve word variants: (( multi plants research : july 2006 ) or ( multi client research : july 2011 ))*.