Perhaps you should try some spelling variations:
bulgariaiae » bulgaricae, bulgariae, bulgariia, vulgariaiae, bulgariaiaiae, bulgarieiaiae
vulgarische » bulgarische, bulgarischen, bulgarischer
vulgarian » bulgarian, bulgarians, vulgaridad
bulgarica » bulgaria, bulgarisch, bulgarian, vulgarica, bulgariaica, bulgarieica
bulgar » vulgar, bulgaria, bulgarie
bulgare » vulgare, bulgariae, bulgariee, bulgarie, bulgarien
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: ((bulgariaiae OR (vulgarische OR (vulgarian OR bulgarica))) OR ((bulgar OR bulgare) OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariaiae or (vulgarische or (vulgarian or bulgarica))) or ((bulgar or bulgare) or bulger))*.