Perhaps you should try some spelling variations:
"multi client research : june 2011" » "multi accident research : june 2011", "multi current research : june 2011", "multi recent research : june 2011", "multi agent research : june 2011", "multi plant research : june 2011", "multi client research : june 2013", "multi client research : june 2014", "multi client research : june 2010"
"arid climate research : july 2012" » "arid climate research : july 2013", "aid climate research : july 2012", "grid climate research : july 2012", "acid climate research : july 2012"

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 : june 2011") OR ("arid climate research : july 2012"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"multi client research : june 2011\") OR (\"arid climate research : july 2012\"))".
• Removing quotes may allow a broader search: (( multi client research : june 2011 ) OR ( arid climate research : july 2012 )).
• Adding a wildcard symbol may retrieve word variants: (("multi client research : june 2011") OR ("arid climate research : july 2012"))*.