Perhaps you should try some spelling variations:
bulgeriae » bulgariae, bulgaricae, bulgarie
bulgarian » hungarian, bulgareian, vulgarian, bulgerian
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgerische
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: (((bulgeriae OR bulgarian) OR (bulgarische OR bulgaria)) OR (bulgar OR bulge))*.