Perhaps you should try some spelling variations:
bulgarien » bulgarian, bulgareien, vulgarien, bulgarieien
bulgariee » bulgarie, bulgariae, bulgariens, bulgareiee, vulgariee, bulgarieiee
vulgarian » bulgarian, bulgarians, vulgaridad
bulgarica » bulgarisch, bulgarian, bulgarie, bulgareica, vulgarica, bulgarieica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, 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: (((bulgarien OR bulgaria) OR (bulgariee OR (vulgarian OR bulgarica))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgarien or bulgaria) or (bulgariee or (vulgarian or bulgarica))) or (bulgar or bulger))*.