Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians, bulgareiae, vulgariae, bulgarieiae
bulgareiae » bulgarian, bulgarie, bulgarean, bulgareeiae, vulgareiae, bulgarieeiae
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, bulgareicae, vulgaricae, bulgarieicae
bulgariane » bulgarian, bulgarians, bulgarien, bulgareiane, vulgariane, bulgarieiane
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica, bulgarieica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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 ((bulgaricae OR bulgariane) OR bulgarica)) 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 ((bulgaricae OR bulgariane) or bulgarica)) or (bulgar or (bulger or bulge)))*".