Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, bulgariaicae, bulgarieicae
bulgerie » bulgarie, bulgarien, bulgariae, bulgeie, bulgesie
bulgar » bulgare, bulgaria, bulgarie
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 bulgerie) OR ((bulgar OR bulger) OR vulgar)).
• Adding a wildcard symbol may retrieve word variants: ((bulgaricae or bulgerie) or ((bulgar or bulger) or vulgar))*.