Perhaps you should try some spelling variations:
bulgare » bulgarie, bulgarien, vulgares, vulgare, bulgere, bulgariee
vulgare » vulgar, vulgaris, vulgarly
bulgaria » vulgaria, bulgeria, bulgarieia
bulgar » vulgar, bulger, 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: ((((bulgare OR bulgaria) OR vulgare) OR vulgare) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: ((((bulgare or bulgaria) or vulgare) or vulgare) or bulgar)*.