Perhaps you should try some spelling variations:
"mindset oriented research : july 2009" » "mindset related research : july 2009", "mindset extended research : july 2009", "market oriented research : july 2009", "asset oriented research : july 2009", "mindset oriented research : july 2008", "mindset oriented research : july 2007", "mindset oriented research : july 2019"
"meet vaccine research : july 2006" » "meet medicine research : july 2006", "media vaccine research : july 2006", "ant vaccine research : july 2006", "mr vaccine research : july 2006", "meet vaccine research : july 2008", "meet vaccine research : july 2007", "meet vaccine research : july 2013"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("mindset oriented research : july 2009") or ("meet vaccine research : july 2006"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mindset oriented research : july 2009") OR ("meet vaccine research : july 2006")).
• Removing quotes may allow a broader search: (( mindset oriented research : july 2009 ) or ( meet vaccine research : july 2006 )).
• Adding a wildcard symbol may retrieve word variants: (("mindset oriented research : july 2009") or ("meet vaccine research : july 2006"))*.