Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
bulgarie » bulgarien, bulgaria, vulgaris, bulgareie, vulgarie, bulgariaie
bulgareians » bulgarians, bulgariens, bulgarean, bulgareeians, vulgareians, bulgariaeians
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgariaian
vulgarian » bulgarians, vulgaridad, bulgaria
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 (bulgareians OR bulgarian)) OR (vulgarian OR bulgarisch))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vulgariae or ((bulgarie or (bulgareians OR bulgarian)) or (vulgarian or bulgarisch))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((vulgariae or ((bulgarie or (bulgareians OR bulgarian)) or (vulgarian or bulgarisch))) or (bulgar or bulger))*.