Perhaps you should try some spelling variations:
vulgare » vulgar, vulgaris, vulgarly
vulgares » vulgars, vulgariss, vulgarlys, vulgaris, vulgar, vulgarly
vulgarien » bulgarien, bulgariens, vulgarisee
bulgar » bulgare, vulgar, bulger

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: (((((vulgare OR vulgares) OR vulgarien) OR vulgare) OR vulgare) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: (((((vulgare or vulgares) or vulgarien) or vulgare) or vulgare) or bulgar)*.