Perhaps you should try some spelling variations:
bulgarian » hungarian, bulgareian, bulgarieian
bulgaricae » bulgarische, bulgarie, bulgaricus, bulgariene, bulgariee, bulgareicae, bulgarieicae
bulgarica » bulgarisch, bulgarien, bulgarie, bulgareica, bulgarieica
bulgaria » bulgareia, bulgarieia
bulgar » bulgare, 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: (((bulgarian OR bulgaria) OR (bulgaricae OR bulgarica)) OR ((bulgar OR vulgar) OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgarian or bulgaria) or (bulgaricae or bulgarica)) or ((bulgar or vulgar) or bulger))*.