Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarians, bulgarien, vulgariae
bulgaricae » bulgarische, bulgarian, bulgarischen, bulgariane, bulgariene, vulgaricae
bulgareian » bulgarian, bulgarean, bulgarien, vulgareian, bulgarienian, vulgaresian
bulgarica » bulgarisch, bulgarian, bulgarien, vulgarica
bulgaria » vulgaria
bulgar » vulgar
bulgarie » vulgarie, bulgarien, bulgarian, vulgaris
bulgare » vulgare, bulgarien, vulgares
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 (bulgareian OR bulgarica))) OR (((bulgar OR bulgarie) OR bulgare) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgaria) or (bulgaricae or (bulgareian or bulgarica))) or (((bulgar OR bulgarie) or bulgare) or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgaria) or (bulgaricae or (bulgareian or bulgarica))) or (((bulgar OR bulgarie) or bulgare) or bulger))*.