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