Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, vulgariae, bulgeriae
vulgaria » vulgaris, vulgari, vulvaria
bulgarie » bulgarien, bulgarian, vulgaris, vulgarie, bulgerie
bulgar » vulgar, bulger
bulgaria » vulgaria, bulgeria
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 vulgaria) OR bulgarie)) OR ((bulgar OR bulgaria) OR bulgare)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgaars or ((bulgariae or vulgaria) or bulgarie)) or ((bulgar OR bulgaria) or bulgare))".
• Adding a wildcard symbol may retrieve word variants: ((bulgaars or ((bulgariae or vulgaria) or bulgarie)) or ((bulgar OR bulgaria) or bulgare))*.