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• Performing a fuzzy search may retrieve terms with similar spellings: John Erickson (((historian OR historyn) OR ((historico OR historical) OR historia)))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "John Erickson (((historian OR historyn) OR ((historico OR historical) OR historia)))".
• Adding a wildcard symbol may retrieve word variants: John Erickson (((historian OR historyn) OR ((historico OR historical) OR historia)))*.