Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians, bulgareiae, vulgariae, bulgarieiae
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, bulgareicae, vulgaricae, bulgarieicae
bulgareian » bulgarian, bulgarean, bulgarien, bulgareeian, vulgareian, bulgarieeian
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica, bulgarieica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, 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 (bulgareian OR bulgarica))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgaria) or (bulgaricae or (bulgareian or bulgarica))) or (bulgar or bulger))*.