Perhaps you should try some spelling variations:
bulgarie » bulgarian, vulgaris, vulgare, bulgareie, vulgarie, bulgerie
bulgarien » bulgariann, vulgarisn, vulgaren, bulgarian, bulgareien, vulgarien, bulgerien
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger
bulgere » bulgare, bulger, bilgere

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: (((bulgarie OR bulgarien) OR bulgaria) OR (bulgar OR bulgere)).
• Adding a wildcard symbol may retrieve word variants: (((bulgarie or bulgarien) or bulgaria) or (bulgar or bulgere))*.