Perhaps you should try some spelling variations:
bulgariaiae » bulgaricae, bulgariae, bulgariia
bulgareiae » bulgariae, bulgaria, bulgarian, bulgarieiae, vulgareiae, bulgarieniae
vulgaricae » bulgaricae, bulgariae, vulgaridad
bulgarica » bulgaria, bulgarisch, bulgarian
bulgare » bulgarie, vulgare, bulgarien
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: (((bulgariaiae OR bulgareiae) OR (vulgaricae OR bulgarica)) OR (bulgare OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariaiae or bulgareiae) or (vulgaricae or bulgarica)) or (bulgare or bulger))*.