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

Try widening your search to All Fields.

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\"))".
• Removing quotes may allow a broader search: (((( 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"))*.