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