Perhaps you should try some spelling variations:
bulgarie » bulgarien, bulgarian, vulgaris, bulgareie, vulgarie, bulgerie
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: ((bulgarie OR ((bulgaria OR bulgariia) OR vulgari)) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: ((bulgarie or ((bulgaria or bulgariia) or vulgari)) or bulgar)*.