Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, vulgariae, bulgeriae, bulgarieiae
vulgaris » vulgar
bulgaria » vulgaria, bulgeria, bulgarieia
bulgar » vulgar, bulger, bulgarie
bulgare » vulgare, bulgere, bulgariee, 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: (((bulgariae OR vulgaris) OR bulgaria) OR (bulgar OR bulgare)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or vulgaris) or bulgaria) or (bulgar or bulgare))*.