Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgaria, bulgarian, bulgareicae, vulgaricae, bulgericae
bulgareiae » bulgariae, bulgaria, bulgarian, bulgareeiae, vulgareiae, bulgereiae
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgerische
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: (((bulgaricae OR bulgareiae) OR bulgarische) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((bulgaricae or bulgareiae) or bulgarische) or (bulgar or bulge))*.