Perhaps you should try some spelling variations:
"legal environmental governance series." » "legal environmental performance series.", "legal environment governance series.", "legal environments governance series.", "local environmental governance series.", "legal environmental governance system."
"social empowerment guidance system." » "social empowerment evidence system.", "social empowerment governance system.", "social empowerment private system.", "social empowerment guidance systems.", "social empowerment avoidance system.", "social empowerment finance system."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("social empowerment guidance system.") or ("legal environmental governance series."))~.
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