Perhaps you should try some spelling variations:
bulgaars » bulgare
bulgariia » bulgarica, bulgaricae, bulgarian, bulgareiia, vulgariia, bulgeriia
vulgari » vulgaris, vulgar, vulgare
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger

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: ((bulgaars OR (bulgariia OR (bulgaria OR vulgari))) OR bulgar)*.