Perhaps you should try some spelling variations:
bulgarien » bulgaria, bulgareien, vulgarien, bulgariaien
bulgareia » bulgaria, bulgariia, bulgarie, bulgareeia, vulgareia, bulgariaeia
bulgar » bulgare, vulgar, bulgaria
bulgarian » bulgareian, vulgarian, bulgariaian, bulgaria, hungarian
bulger » bulge, bulges
billigere » billiger, villiger, billigen

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 bulgareia) OR ((bulgar OR bulger) OR (bulgarian OR billigere))).
• Adding a wildcard symbol may retrieve word variants: ((bulgarien or bulgareia) or ((bulgar or bulger) or (bulgarian or billigere)))*.