Perhaps you should try some spelling variations:
"mdg oriented research : july 2012" » "mdg related research : july 2012", "mdg extended research : july 2012", "model oriented research : july 2012", "sex oriented research : july 2012", "4.1 oriented research : july 2012", "mdg oriented research : july 2013"
"recent climatic research : july 2007" » "recent climate research : july 2007", "recurrent climatic research : july 2007", "iirecent climate research : july 2007", "recent climatic research : july 2008", "recent climatic research : july 2013", "recent climatic research : july 2020"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("mdg oriented research : july 2012") or ("recent climatic research : july 2007"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mdg oriented research : july 2012") OR ("recent climatic research : july 2007")).
• Removing quotes may allow a broader search: (( mdg oriented research : july 2012 ) or ( recent climatic research : july 2007 )).
• Adding a wildcard symbol may retrieve word variants: (("mdg oriented research : july 2012") or ("recent climatic research : july 2007"))*.