Perhaps you should try some spelling variations:
bulgarian » hungarian, bulgareian, vulgarian, bulgarieian
vulgaricae » bulgaricae, bulgariae, vulgaridad
bulgarica » bulgarisch, bulgarien, bulgarie, bulgareica, vulgarica, bulgarieica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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: (((bulgaria OR bulgarian) OR (vulgaricae OR bulgarica)) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgaria or bulgarian) or (vulgaricae or bulgarica)) or (bulgar or bulger))*.