Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarie, bulgareiae, vulgariae, bulgariaiae
bulgareiae » bulgaria, bulgarie, bulgaricae, bulgareeiae, vulgareiae, bulgariaeiae
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgariaian
vulgarise » vulgarisee, vulgarises, vulgaris
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 (bulgareiae OR bulgarian)) OR (vulgarise OR bulgarica)) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or (bulgareiae OR bulgarian)) or (vulgarise or bulgarica)) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or (bulgareiae OR bulgarian)) or (vulgarise or bulgarica)) or (bulgar or bulger))*.