Perhaps you should try some spelling variations:
bulgare » bulgarie, bulgaria, vulgares, vulgare, bulgere, bulgariae
vulgare » vulgar, vulgaris, vulgarly
bulgarien » bulgarian, bulgaria, vulgarien, bulgerien, bulgariaien
bulgar » vulgar, bulger, bulgaria
vulgaria » bulgaria, vulgaris, vulgari

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: (((((bulgare OR vulgare) OR bulgarien) OR vulgare) OR vulgare) OR (bulgar OR vulgaria)).
• Adding a wildcard symbol may retrieve word variants: (((((bulgare or vulgare) or bulgarien) or vulgare) or vulgare) or (bulgar or vulgaria))*.