Perhaps you should try some spelling variations:
bulgare » bulgaria, vulgares
bulgarien » bulgarian, bulgaria, bulgariann, vulgarisn
vulgare » vulgar, vulgaris, vulgarly
bulgarie » bulgaria, bulgarian, vulgaris
bulger » bulge, bulges

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