Perhaps you should try some spelling variations:
bulgare » bulgarie, vulgare, bulgarien, bulgere, bulgariee
vulgaris » vulgar
bulgarischen » ungarischen, bulgarien, ungarische, vulgarischen, bulgerischen, bulgarieischen
bulgaria » vulgaria, bulgeria, bulgarieia
bulgar » vulgar, bulger, bulgarie

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 ((bulgaria OR vulgaris) OR bulgarischen)) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: ((bulgare or ((bulgaria or vulgaris) or bulgarischen)) or bulgar)*.