Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, vulgariae, bulgarieiae
bulgareiae » bulgarian, bulgarie, bulgaricae, vulgareiae, bulgarieeiae, bulgarieiae, bulgarieniae
bulgarische » bulgarischen, ungarische, vulgarische, bulgarieische
bulgarica » bulgarisch, bulgarian, bulgarien, vulgarica, bulgarieica
bulgaria » vulgaria, bulgarieia
bulgar » vulgar, bulgarie
bulgare » vulgare, bulgariee, bulgarie, bulgarien
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 (bulgarische OR bulgarica)) OR ((bulgar OR bulgare) OR (bulger OR bulge))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bulgariae or bulgaria) or bulgareiae) or (bulgarische or bulgarica)) or ((bulgar OR bulgare) or (bulger or bulge)))".
• Adding a wildcard symbol may retrieve word variants: ((((bulgariae or bulgaria) or bulgareiae) or (bulgarische or bulgarica)) or ((bulgar OR bulgare) or (bulger or bulge)))*.