Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, bulgareiae, bulgeriae
bulgeriae » bulgaricae, bulgarian, bulweria
bulgar » bulgare, bulger
bulgarie » bulgareie, bulgerie, bulgarien, bulgarian, vulgaris
bulgaria » bulgareia, bulgeria
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 vulgar) OR bulgarie) OR bulgaria) OR bulgere))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or bulgeriae) or ((((bulgar OR vulgar) or bulgarie) or bulgaria) or bulgere))*".