Perhaps you should try some spelling variations:
bulgariae » bulgaria, bulgarians, bulgarien, bulgareiae, vulgariae, bulgariaiae
bulgarie » bulgarien, bulgaria, vulgaris, bulgareie, vulgarie, bulgariaie
vulgaria » bulgaria, vulgaris, vulgari
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, vulgaricae, bulgariaicae
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgariaian
bulgarisch » bulgarische, bulgarischen, bulgareisch, vulgarisch, bulgariaisch
bulgar » bulgare, vulgar, bulgaria
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 bulgarie) OR vulgaria) OR (bulgaricae OR (bulgarian OR bulgarisch))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((((bulgariae or bulgarie) or vulgaria) or (bulgaricae or (bulgarian or bulgarisch))) or (bulgar or bulger))*.