Perhaps you should try some spelling variations:
"legal environment governance series." » "legal environmental governance series.", "legal enforcement governance series.", "legal investment governance series.", "global environment governance series.", "legal environment governance issues."
"legal environment governance system." » "legal environmental governance system.", "legal enforcement governance system.", "legal investment governance system.", "global environment governance system.", "legal environment governance issues."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("legal environment governance series.") or ("legal environment governance system."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("legal environment governance series.") OR ("legal environment governance system.")).
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• Adding a wildcard symbol may retrieve word variants: (("legal environment governance series.") or ("legal environment governance system."))*.