Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgeriae
vulgaria » bulgaria, vulgaris, vulgari
vulgarly » vulgar, vulgaris
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: (((bulgariae OR vulgaria) OR vulgarly) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or vulgaria) or vulgarly) or bulgar)*.