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