Perhaps you should try some spelling variations:
client research » accident research, climate research, current research
option research » opinion research, action research, optics research
multi client » multi agent, multi plant
multi option » multi location, multi population, multi ratios
july 2007 » july 2012, july 2020, july 2015
july 2008 » july 2012, july 2020, 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 client research : july 2013 ) or ( multi option research : ((july 2007) OR (july 2008)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( multi client research : july 2013 ) OR ( multi option research : ((july 2007) OR (july 2008)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( multi client research : july 2013 ) or ( multi option research : ((july 2007) OR (july 2008)) ))".
• Adding a wildcard symbol may retrieve word variants: (( multi client research : july 2013 ) or ( multi option research : ((july 2007) OR (july 2008)) ))*.