Perhaps you should try some spelling variations:
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgerische
vulgaris » vulgar
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger
bulges » bulge
bulgere » bulgare, bulger, bilgere

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