Perhaps you should try some spelling variations:
bulgare » bulgarie, vulgare, bulgere, bulgariee
vulgares » vulgaris, vulgare, vulgarly
bulgarien » bulgarian, bulgerien, bulgarieien
bulgar » bulger, bulgarie
bulgaria » bulgeria, bulgarieia

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 vulgares) OR bulgarien) OR vulgar) OR vulgar) OR (bulgar OR bulgaria)).
• Adding a wildcard symbol may retrieve word variants: (((((bulgare or vulgares) or bulgarien) or vulgar) or vulgar) or (bulgar or bulgaria))*.