Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, vulgaricae, bulgericae
vulgaria » bulgaria, vulgari, vulvaria
vulgaris » bulgaria, vulgar
bulgar » bulgare, vulgar, bulger
bulgarie » bulgareie, vulgarie, bulgerie, bulgarien, bulgaria, bulgarian
bulgere » bulgare, bulger, bilgere

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: ((bulgaricae OR (vulgaria OR vulgaris)) OR (((bulgar OR bulgarie) OR bulge) OR bulgere)).
• Adding a wildcard symbol may retrieve word variants: ((bulgaricae or (vulgaria or vulgaris)) or (((bulgar or bulgarie) or bulge) or bulgere))*.