Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgeriae
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger
vulgare » vulgar, vulgaris, vulgarly

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: ((bulgaria OR bulgariae) OR (bulgar OR vulgare)).
• Adding a wildcard symbol may retrieve word variants: ((bulgaria or bulgariae) or (bulgar or vulgare))*.