Perhaps you should try some spelling variations:
bulgere » bulgare, bilgere, burgere, bulgee, bulgese
vulgaria » vulgaris, vulgari, vulvaria
bulgarieien » bulgarien, bulgaristen, bulgarischen, bulgareieien, vulgarieien, bulgarieieien
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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: ((bulgere OR ((bulgaria OR vulgaria) OR bulgarieien)) OR (bulgar OR bulger))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgere or ((bulgaria or vulgaria) or bulgarieien)) or (bulgar OR bulger))*".