Perhaps you should try some spelling variations:
vulgareiae » bulgariae, vulgarise
vulgarica » bulgarica, bulgaricae, vulgaridad
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: ((vulgareiae OR (vulgarica OR (bulgarian OR bulgarisch))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((vulgareiae or (vulgarica or (bulgarian or bulgarisch))) or (bulgar or bulger))*.