Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians, vulgariae, bulgarieiae
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, vulgaricae, bulgarieicae
bulgarica » bulgarisch, bulgarian, bulgarien, vulgarica, bulgarieica
bulgariia » bulgarian, bulgarien, bulgarie, vulgariia, bulgarieiia
bulgaria » vulgaria, bulgarieia
bulgar » vulgar, bulgarie
bulgare » vulgare, bulgariee, bulgarie, bulgarien
bulger » bulge, bulges

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 (bulgaricae OR ((bulgarica OR bulgaria) OR bulgariia))) OR ((bulgar OR bulgare) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or (bulgaricae or ((bulgarica OR bulgaria) or bulgariia))) or ((bulgar or bulgare) or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or (bulgaricae or ((bulgarica OR bulgaria) or bulgariia))) or ((bulgar or bulgare) or bulger))*.