Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgarian, bulgareicae, vulgaricae, bulgericae
bulgarisch » bulgarische, bulgarischen, bulgareisch, vulgarisch, bulgerisch
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger
bulges » bulge

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 bulgaria) OR (bulgaricae OR bulgarisch)) OR (bulgar OR bulges)).
• Adding a wildcard symbol may retrieve word variants: (((bulgaricae or bulgaria) or (bulgaricae or bulgarisch)) or (bulgar or bulges))*.