Perhaps you should try some spelling variations:
bulgare » bulgarie, vulgare, bulgarien, bulgere, bulgariae
bulgarica » bulgaria, bulgarisch, bulgarian, vulgarica, bulgerica, bulgariaica
bulgarienian » bulgarian, bulgarien, bulgariens, vulgarienian, bulgerienian, bulgariaienian
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 (bulgarica OR bulgarienian)) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: ((bulgare or (bulgarica or bulgarienian)) or bulgar)*.