Perhaps you should try some spelling variations:
bulgaricae » bulgarische, bulgaria, bulgarian, bulgariae, bulgariane, bulgareicae, bulgericae, bulgariaicae
bulgarica » bulgaria, bulgarisch, bulgarian, bulgareica, bulgerica, bulgariaica
vulgaris » bulgaria
bulgar » bulgare, bulger, bulgaria
bulgarien » bulgareien, bulgerien, bulgariaien, bulgarian, bulgaria
bulges » bulge

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: (((bulgaricae OR bulgarica) OR vulgaris) OR (((bulgar OR bulgarien) OR vulgar) OR bulges))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgaricae OR bulgarica) or vulgaris) or (((bulgar or bulgarien) or vulgar) or bulges))*".