Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
bulgarien » bulgaria, vulgarien, bulgariaien, bulgarieien
bulgarian » bulgaria, hungarian, vulgarian, bulgariaian, bulgarieian
bulgar » vulgar, bulgaria, bulgarie
bulgare » vulgare, bulgariae, bulgariee, bulgarie, bulgaria
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: ((vulgariae OR (bulgarien OR bulgarian)) OR ((bulgar OR bulgare) OR bulger))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vulgariae or (bulgarien OR bulgarian)) or ((bulgar or bulgare) or bulger))*".