Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgariaiae
vulgariae » vulgarise, bulgaricae, vulgaridad
bulgarie » bulgarien, bulgaria, bulgarian, bulgareie, vulgarie, bulgariaie
vulgarian » bulgarian, bulgarians, vulgaridad
bulgarica » bulgaria, bulgarisch, bulgarian, bulgareica, vulgarica, bulgariaica
bulgareia » bulgaria, bulgariia, bulgarian, bulgareeia, vulgareia, bulgariaeia
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 vulgariae) OR (bulgarie OR (vulgarian OR (bulgarica OR bulgareia)))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or vulgariae) or (bulgarie or (vulgarian or (bulgarica or bulgareia)))) or (bulgar or bulger))*.