Perhaps you should try some spelling variations:
vulgarien » bulgariens, vulgarisee, vulgarises
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger
bulgarien » bulgareien, vulgarien, bulgerien, bulgarian
bulges » bulge
vulgaris » vulgar
bilgere » bilger, bilgeri, billigere

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: ((vulgarien OR bulgaria) OR ((bulgar OR bulges) OR ((bulgarien OR vulgaris) OR bilgere))).
• Adding a wildcard symbol may retrieve word variants: ((vulgarien or bulgaria) or ((bulgar or bulges) or ((bulgarien or vulgaris) or bilgere)))*.