Perhaps you should try some spelling variations:
"multi climatic research : july 2007" » "multi climate research : july 2007", "multi climatic research : july 2013", "multi climatic research : july 2012", "multi climatic research : july 2020"
"multi educational research : july 2008" » "maxi educational research : july 2008", "multi generational research : july 2008", "multi national research : july 2008", "multi educational research : july 2013", "multi educational research : july 2012", "multi educational research : july 2020"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi climatic research : july 2007") or ("multi educational research : july 2008"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi climatic research : july 2007") OR ("multi educational research : july 2008")).
• Removing quotes may allow a broader search: (( multi climatic research : july 2007 ) or ( multi educational research : july 2008 )).
• Adding a wildcard symbol may retrieve word variants: (("multi climatic research : july 2007") or ("multi educational research : july 2008"))*.