Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgeriae
bulgeriae » bulgaricae, bulgarian, bulgarie
bulgar » bulgare, vulgar, bulger
bulgaria » bulgareia, vulgaria, bulgeria
bulgariee » bulgareiee, vulgariee, bulgeriee, bulgarien, bulgarie, bulgariens
bulgere » bulgare, bulger, bilgere

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 bulgeriae) OR ((bulgar OR bulgaria) OR (bulgariee OR bulgere))).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgeriae) or ((bulgar or bulgaria) or (bulgariee or bulgere)))*.