Perhaps you should try some spelling variations:
bulgarie » bulgaria, bulgarian, vulgaris
bulgarien » bulgarian, bulgariann, vulgarisn, bulgaria
vulgarien » bulgariens, vulgarisee, vulgarises
bulgare » vulgare, bulgaria, vulgares

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