Perhaps you should try some spelling variations:
bulgaricae » bulgarische, bulgaria, bulgarian, bulgariae, bulgariane, bulgareicae, vulgaricae, bulgariaicae
bulgariae » bulgaria, bulgarian, bulgarie, bulgareiae, vulgariae, bulgariaiae
bulgarica » bulgaria, bulgarisch, bulgarian, bulgareica, vulgarica, bulgariaica
bulgar » bulgare, vulgar, bulgaria
bulger » 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 bulgariae) OR (bulgaricae OR bulgarica)) OR (bulgar OR (bulger OR bulge))).
• Adding a wildcard symbol may retrieve word variants: (((bulgaricae or bulgariae) or (bulgaricae or bulgarica)) or (bulgar or (bulger or bulge)))*.