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• Performing a fuzzy search may retrieve terms with similar spellings: (accademia OR academic) nazionale delle scienze (stati uniti d'american)~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(accademia OR academic) nazionale delle scienze (stati uniti d'american)".
• Adding a wildcard symbol may retrieve word variants: (accademia OR academic) nazionale delle scienze (stati uniti d'american)*.