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 issues.", "legal environmental governance system."
"legal enforcement governance series." » "legal empowerment governance series.", "law enforcement governance series.", "weak enforcement governance series.", "legal environment governance series.", "legal enforcement governance issues.", "legal enforcement governance system."

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