Perhaps you should try some spelling variations:
bulgarie » bulgarien, bulgarian, vulgaris, vulgarie, bulgerie
vulgaricae » bulgaricae, bulgariae, vulgaridad
bulgarica » bulgarisch, bulgarian, bulgarien, vulgarica, bulgerica
bulgaria » vulgaria, bulgeria
bulgar » vulgar, bulger
bulgare » vulgare, bulgere, bulgarien, vulgares
bulges » bulge

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: (((bulgaria OR bulgarie) OR (vulgaricae OR bulgarica)) OR ((bulgar OR bulgare) OR bulges)).
• Adding a wildcard symbol may retrieve word variants: (((bulgaria or bulgarie) or (vulgaricae or bulgarica)) or ((bulgar or bulgare) or bulges))*.