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