Perhaps you should try some spelling variations:
medioevo roman » medieval roman, medioevo san, relievo roman
romanis et » romans et, romaines et, romains et
romano et » romano e, romano del, romano per
roman et » romain et, romans et, roman etc

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( Medioevo romano et orientale ) OR ( Medioevo roman et orientale ))) OR ( medioevo romanis et orientale )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( Medioevo romano et orientale ) OR ( Medioevo roman et orientale ))) or ( medioevo romanis et orientale ))".
• Adding a wildcard symbol may retrieve word variants: (((( Medioevo romano et orientale ) OR ( Medioevo roman et orientale ))) or ( medioevo romanis et orientale ))*.