Perhaps you should try some spelling variations:
"routledge studies in environmental policies." » "routledge studies in environmental policy.", "routledge studies in environmental protection."
"Routledge studies in environment policy." » "Routledge studies in environmental policy.", "Routledge studies in environmental politics."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("Routledge studies in environment policy.") OR ("Routledge studies in environment facility."))) or ("routledge studies in environmental policies."))~.
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• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Routledge studies in environment policy.\") OR (\"Routledge studies in environment facility.\"))) or (\"routledge studies in environmental policies.\"))".
• Removing quotes may allow a broader search: (((( Routledge studies in environment policy. ) OR ( Routledge studies in environment facility. ))) or ( routledge studies in environmental policies. )).
• Adding a wildcard symbol may retrieve word variants: (((("Routledge studies in environment policy.") OR ("Routledge studies in environment facility."))) or ("routledge studies in environmental policies."))*.