Perhaps you should try some spelling variations:
bulgere » bulgare, bulger, bilgere
vulgaria » vulgaris, vulgari, vulvaria
bulgarieien » bulgarien, bulgaristen, bulgarischen, bulgareieien, vulgarieien, bulgerieien
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: ((bulgere OR ((bulgaria OR vulgaria) OR bulgarieien)) OR bulgar)*.