Perhaps you should try some spelling variations:
vulgareiae » bulgariae, vulgarise
vulgaricae » bulgaricae, bulgarica, bulgariae
bulgarisch » bulgarische, bulgarischen, bulgareisch, vulgarisch, bulgarieisch
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
bulger » 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 (vulgaricae OR (bulgaria OR bulgarisch))) OR ((bulgar OR bulger) OR bulge)).
• Adding a wildcard symbol may retrieve word variants: ((vulgareiae or (vulgaricae or (bulgaria or bulgarisch))) or ((bulgar or bulger) or bulge))*.