Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians, bulgareiae, bulgarieiae
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, bulgareicae, bulgarieicae
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, bulgarieica
bulgaria » bulgareia, bulgarieia
bulgar » bulgare, bulgarie
bulger » bulge, 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 (bulgaricae OR bulgarica)) OR ((bulgar OR vulgar) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgaria) or (bulgaricae or bulgarica)) or ((bulgar OR vulgar) or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgaria) or (bulgaricae or bulgarica)) or ((bulgar OR vulgar) or bulger))*.