Perhaps you should try some spelling variations:
"baseline climate research : july 2007" » "basin climate research : july 2007", "baseline estimates research : july 2007", "based climate research : july 2007", "baseline climate research : july 2008", "baseline climate research : july 2013", "baseline climate research : july 2012"
"multi climatic research : july 2007" » "multi climatic research : july 2008", "multi climatic research : july 2013", "multi climatic research : july 2012"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"multi climatic research : july 2007\") OR (\"baseline climate research : july 2007\"))~".
• Removing quotes may allow a broader search: (( multi climatic research : july 2007 ) OR ( baseline climate research : july 2007 ))~.
• Adding a wildcard symbol may retrieve word variants: (("multi climatic research : july 2007") OR ("baseline climate research : july 2007"))*.