Perhaps you should try some spelling variations:
bulgere » bulgare, bilgere, burgere, bulgee, bulgese
bulgarien » bulgarian, bulgaria
vulgare » vulgar, vulgaris, vulgarly
bulger » bulge, bulges
bulgeria » bulgeia, bulgesia, bulgaria, bulweria, bulgarian

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: ((((bulgere OR bulgarien) OR vulgare) OR vulgare) OR (bulger OR bulgeria)).
• Adding a wildcard symbol may retrieve word variants: ((((bulgere or bulgarien) or vulgare) or vulgare) or (bulger or bulgeria))*.