Perhaps you should try some spelling variations:
"multi related research : july 2009" » "multi based research : july 2009", "multi water research : july 2009", "multi rate research : july 2009", "fault related research : july 2009", "multi rater research : july 2009", "multi related research : july 2008", "multi related research : july 2007", "multi related research : july 2019"
"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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi related research : july 2009") OR ("arid climate research : july 2012"))~.
• Removing quotes may allow a broader search: (( multi related research : july 2009 ) or ( arid climate research : july 2012 ))~.
• Adding a wildcard symbol may retrieve word variants: (("multi related research : july 2009") or ("arid climate research : july 2012"))*.