Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, vulgariae, bulgeriae
bulgarie » bulgarien, bulgarian, vulgaris, vulgarie, bulgerie
bulgeriae » bulgaricae, bulgarian, bulweria
bulgar » vulgar, bulger
bulgaria » vulgaria, bulgeria
bulgare » vulgare, bulgere, bulgarien, vulgares
bulgere » bulger, bilgere, burgere

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