Perhaps you should try some spelling variations:
bulgaricae » bulgarische, bulgarie, bulgaricus, bulgariee, bulgareicae, vulgaricae, bulgericae
bulgarian » hungarian, bulgareian, vulgarian, bulgerian
bulgarica » bulgarisch, bulgarie, bulgareica, vulgarica, bulgerica
bulgarien » bulgareien, vulgarien, bulgerien
bulgaria » bulgareia, vulgaria, bulgeria
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: (((bulgarien OR bulgaria) OR (bulgaricae OR (bulgarian OR bulgarica))) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((bulgarien or bulgaria) or (bulgaricae or (bulgarian or bulgarica))) or (bulgar or bulge))*.