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