Perhaps you should try some spelling variations:
vulgariia » bulgariia, vulgaridad, bulgaria
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, vulgaricae, bulgericae
vulgarica » bulgarica, vulgaridad, bulgaria
bulgarien » bulgarian, bulgaria, bulgareien, vulgarien, bulgerien
bulgar » bulgare, vulgar, bulger

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: ((vulgariia OR (bulgaricae OR (vulgarica OR bulgarien))) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: ((vulgariia or (bulgaricae or (vulgarica or bulgarien))) or (bulgar or bulge))*.