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

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