Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene
bulgarica » bulgarisch, bulgarian, bulgarien
bulgare » bulgarie, vulgare, bulgarien
vulgaris » vulgar
bilgere » bilger, bilgeri, billigere
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: (((bulgariae OR bulgaria) OR (bulgaricae OR bulgarica)) OR (((bulgare OR vulgaris) OR bilgere) OR bulges))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgaria) or (bulgaricae OR bulgarica)) or (((bulgare or vulgaris) or bilgere) or bulges))*".