Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarie, bulgareiae, vulgariae, bulgariaiae
bulgariaeian » bulgaricaeian, bulgariaian, bulgarieian, bulgarean, bulgariia, bulgareiaeian, vulgariaeian, bulgariaiaeian
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgariaian
vulgaricae » bulgaricae, bulgarica, vulgaridad
bulgarien » bulgaria, bulgareien, vulgarien, bulgariaien
bulgar » bulgare, vulgar, bulgaria
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 (bulgarian OR bulgariaeian)) OR (vulgaricae OR bulgarien)) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or (bulgarian or bulgariaeian)) or (vulgaricae or bulgarien)) or (bulgar or bulger))*.