Perhaps you should try some spelling variations:
bulgere » bulgare, bilgere, burgere, bulgee, bulgese
bulger » bulge, bulges
vulgaria » vulgaris, vulgari, vulvaria
bulgarien » bulgarian, bulgareien, vulgarien, bulgarieien
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie

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 bulger) OR ((bulgaria OR vulgaria) OR bulgarien)) OR bulgar)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgere OR bulger) or ((bulgaria or vulgaria) or bulgarien)) or bulgar)*".