Perhaps you should try some spelling variations:
vulgaria » bulgaria, vulgaris, vulgari
bulgeriae » bulgariae, bulgaricae, bulgaria
bulgar » vulgar, bulger, bulgaria
bulgare » vulgare, bulgere, bulgariae, bulgarie, bulgarien

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: ((vulgaria OR bulgeriae) OR (bulgar OR bulgare)).
• Adding a wildcard symbol may retrieve word variants: ((vulgaria or bulgeriae) or (bulgar or bulgare))*.