Perhaps you should try some spelling variations:
multinationals research » binational research, multinationals report
_ multinationals » _ multinational, multinationals _
option research » opinion research, action research, optics research
multi option » multi location, multi population, multi ratios
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 option research : july 2012 ) or ( _ multinationals research : july 2012 ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( multi option research : july 2012 ) OR ( _ multinationals research : july 2012 )).
• Adding a wildcard symbol may retrieve word variants: (( multi option research : july 2012 ) or ( _ multinationals research : july 2012 ))*.