Perhaps you should try some spelling variations:
vulgariae » vulgarise, bulgaricae, vulgaridad
bulgariae » bulgaricae, bulgarian, bulgarians
vulgarische » bulgarische, bulgarischen, bulgarischer
bulgarianians » bulgarians
bulgarie » bulgarien, bulgarian, vulgaris
bulgare » vulgare, bulgarien, vulgares

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: (((vulgariae OR bulgariae) OR (vulgarische OR (bulgarianians OR bulgaria))) OR ((bulgarie OR bulgare) OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((vulgariae or bulgariae) or (vulgarische or (bulgarianians or bulgaria))) or ((bulgarie or bulgare) or bulge))*.