Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgariaiae
bulgarie » bulgarien, bulgaria, bulgarian, bulgareie, vulgarie, bulgariaie
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: (((bulgariae OR bulgarie) OR (bulgariae OR bulgarica)) OR (bulgar OR (bulger OR bulge))).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgarie) or (bulgariae or bulgarica)) or (bulgar or (bulger or bulge)))*.