Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarians, bulgarien, bulgareiae, vulgariae
bulgarie » bulgarien, bulgarian, vulgaris, bulgareie, vulgarie
bulgareiae » bulgarian, bulgarean, bulgariia, bulgareeiae, vulgareiae
bulgaricae » bulgarica, bulgarische, bulgarian, bulgareicae, vulgaricae
bulgareica » bulgarica, bulgariia, bulgareeica, vulgareica
bulgaria » bulgareia, vulgaria
bulgar » bulgare, vulgar
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 bulgaria) OR bulgareiae) OR (bulgaricae OR bulgareica)) OR (bulgar OR (bulger OR bulge))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((bulgariae OR bulgarie) or bulgaria) or bulgareiae) or (bulgaricae or bulgareica)) or (bulgar or (bulger or bulge)))".
• Adding a wildcard symbol may retrieve word variants: (((((bulgariae OR bulgarie) or bulgaria) or bulgareiae) or (bulgaricae or bulgareica)) or (bulgar or (bulger or bulge)))*.