Perhaps you should try some spelling variations:
"nature _ society ser." » "nature _ societe ser.", "nature _ society self.", "nature _ society sts."
"nature free society sri." » "nature from society sri.", "nature freedom society sri.", "nature morte society sri.", "nature free society sts.", "nature free society series.", "nature free society self."
"nature re society sri." » "nature re society sts.", "nature re society series.", "nature re society self.", "nature e society sri.", "nature tree society sri.", "nature ceo society sri.", "nature de society sri.", "nature role society sri.", "nature die society sri."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("nature _ society ser.") or ((("nature free society sri.") OR ("nature re society sri."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nature _ society ser.") OR ((("nature free society sri.") OR ("nature re society sri.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nature _ society ser.\") or (((\"nature free society sri.\") OR (\"nature re society sri.\"))))".
• Removing quotes may allow a broader search: (( nature _ society ser. ) or ((( nature free society sri. ) OR ( nature re society sri. )))).
• Adding a wildcard symbol may retrieve word variants: (("nature _ society ser.") or ((("nature free society sri.") OR ("nature re society sri."))))*.