Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarians, bulgarien
bulgaricae » bulgarische, bulgarian, bulgaricus, bulgariane, bulgariene
bulgareeian » bulgarian, bulgarean
bulgarica » bulgarisch, bulgarian, bulgarien
bulgarie » bulgarien, bulgarian, vulgaris
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: (((bulgariae OR bulgaria) OR (bulgaricae OR (bulgareeian OR bulgarica))) OR (bulgarie OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgaria) or (bulgaricae or (bulgareeian or bulgarica))) or (bulgarie or bulger))*.