Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
bulgarie » bulgarien, bulgaria, vulgaris, bulgareie, vulgarie, bulgariaie
bulgarians » bulgariens, bulgaria, bulgarien, bulgarias, hungarians, bulgareians, vulgarians, bulgariaians
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: ((vulgariae OR ((bulgarie OR bulgarians) OR (bulgarian OR bulgarisch))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((vulgariae or ((bulgarie or bulgarians) or (bulgarian or bulgarisch))) or (bulgar or bulger))*.