Perhaps you should try some spelling variations:
bulgareiae » bulgariae, bulgarian, bulgarie, bulgareeiae, vulgareiae, bulgereiae
vulgareian » bulgarian, bulgarean
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgerische
bulgareische » bulgarischen, bulgarisch, bulgarischer, bulgareeische, vulgareische, bulgereische
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger

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: (((bulgareiae OR vulgareian) OR ((bulgarische OR bulgareische) OR bulgaria)) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((bulgareiae or vulgareian) or ((bulgarische or bulgareische) or bulgaria)) or (bulgar or bulge))*.