Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarians, bulgarien, bulgareiae, vulgariae
bulgarie » bulgarien, vulgaris, vulgare, bulgareie, vulgarie
bulgarian » hungarian, bulgareian, vulgarian
vulgarian » bulgarians, vulgaridad, hungarian
bulgariaica » bulgarica, bulgariia, bulgareiaica, vulgariaica
bulgaria » bulgareia, vulgaria
bulgar » bulgare, vulgar
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 (bulgarie OR ((bulgarian OR vulgarian) OR bulgariaica))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae OR bulgaria) or (bulgarie or ((bulgarian or vulgarian) or bulgariaica))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae OR bulgaria) or (bulgarie or ((bulgarian or vulgarian) or bulgariaica))) or (bulgar or bulger))*.