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