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