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