Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarie, bulgarians, bulgareiae, bulgeriae, bulgarieiae
bulgarian » hungarian, bulgareian, bulgerian, bulgarieian
bulgarieische » bulgarische, bulgaristischen, bulgarischen, bulgareieische, bulgerieische, bulgarieieische
bulgaria » bulgareia, bulgeria, bulgarieia
bulgar » bulgare, bulger, bulgarie

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 bulgarian) OR (bulgarieische OR bulgaria)) OR ((bulgar OR vulgar) OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgarian) or (bulgarieische or bulgaria)) or ((bulgar or vulgar) or bulge))*.