Perhaps you should try some spelling variations:
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, bulgareicae, vulgaricae, bulgarieicae
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica, bulgarieica
bulgareica » bulgariia, bulgareeica, vulgareica, bulgarieeica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, 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 (bulgaria OR (bulgarica OR bulgareica))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgaricae or (bulgaria or (bulgarica or bulgareica))) or (bulgar or bulger))*.