Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgarian, bulgericae, bulgarieicae
bulgeriae » bulgariae, bulgarian, bulgarie
bulgar » bulger, bulgarie
bulgaria » bulgeria, bulgarieia
bulgare » bulgere, bulgariee, bulgarie, vulgare, bulgarien

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