Perhaps you should try some spelling variations:
bulgareiae » bulgariae, bulgaria, bulgarie, bulgareeiae, vulgareiae, bulgereiae
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgerian
vulgarische » bulgarische, bulgarischen, bulgarischer
vulgaria » bulgaria, vulgaris, vulgari
bulgeria » bulgaria, bulweria, bulgarica
bulgar » bulgare, vulgar, bulger

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: (((bulgareiae OR bulgarian) OR (vulgarische OR (vulgaria OR bulgeria))) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((bulgareiae or bulgarian) or (vulgarische or (vulgaria or bulgeria))) or (bulgar or bulge))*.