Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarie, bulgeriae, bulgariaiae, bulgarieiae
bulgarian » bulgaria, hungarian, bulgerian, bulgariaian, bulgarieian
bulgar » bulger, bulgaria, bulgarie
bulgare » bulgere, bulgariae, bulgariee, bulgarie, vulgare, bulgarien
bulgeria » bulgaria, bulweria, bulgarica

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 bulgarian) OR ((bulgar OR bulgare) OR (bulgeria OR vulgar))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae OR bulgarian) or ((bulgar or bulgare) or (bulgeria or vulgar)))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae OR bulgarian) or ((bulgar or bulgare) or (bulgeria or vulgar)))*.