Perhaps you should try some spelling variations:
vulgareiae » bulgariae, vulgarise
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, vulgaricae, bulgariaicae
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgariaian
vulgarisch » bulgarisch, bulgarische, vulgaris
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 (bulgaricae OR (bulgarian OR vulgarisch))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((vulgareiae or (bulgaricae or (bulgarian or vulgarisch))) or (bulgar or bulger))*.