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