Perhaps you should try some spelling variations:
bulgariae » bulgarie, bulgarians, bulgarien, vulgariae, bulgarieiae
bulgaricae » bulgarische, bulgarie, bulgarischen, bulgariene, bulgariee, vulgaricae, bulgarieicae
bulgarian » hungarian, vulgarian, bulgarieian
bulgarica » bulgarisch, bulgarien, bulgarie, vulgarica, bulgarieica
bulgaria » vulgaria, bulgarieia
bulgar » vulgar, bulgarie
bulgare » vulgare, bulgariee, bulgarie, bulgarien
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 bulgarica))) OR ((bulgar OR bulgare) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae OR bulgaria) or (bulgaricae or (bulgarian or bulgarica))) or ((bulgar or bulgare) or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae OR bulgaria) or (bulgaricae or (bulgarian or bulgarica))) or ((bulgar or bulgare) or bulger))*.