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