Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgariaian
vulgaricae » bulgaricae, bulgariae, vulgaridad
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: (((vulgariae OR bulgarian) OR (vulgaricae OR bulgarica)) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((vulgariae or bulgarian) or (vulgaricae or bulgarica)) or (bulgar or bulger))*.