Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgarieiae
vulgaricae » bulgaricae, vulgaridad, vulgarise
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica, bulgarieica
bulgariaica » bulgariia, bulgareiaica, vulgariaica, bulgarieiaica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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 ((vulgaricae OR bulgaria) OR (bulgarica OR bulgariaica))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or ((vulgaricae or bulgaria) or (bulgarica or bulgariaica))) or (bulgar or bulger))*.