Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgarian
bulgarie » bulgarien, bulgarian, vulgaris
bulgareiae » bulgariae, bulgarian, bulgarean, vulgareiae, bulgarieniae, vulgaresiae
vulgaricae » bulgarica, bulgariae, vulgaridad
bulgare » vulgare, bulgarien, vulgares
bulger » bulge, bulges

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 (bulgarie OR bulgaria)) OR bulgareiae) OR vulgaricae) OR (bulgare OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((((bulgaricae or (bulgarie or bulgaria)) or bulgareiae) or vulgaricae) or (bulgare or bulger))*.