Perhaps you should try some spelling variations:
bulgaricae » bulgarische, bulgarian, bulgarie, vulgaricae, bulgericae, bulgarieicae, bulgariane, bulgariene
bulgeriae » bulgariae, bulgarian, bulgarie, bulweriae, bulgariane, bulgariaee
bulgar » vulgar, bulger, bulgarie
bulgaria » vulgaria, bulgeria, bulgarieia
bulgarica » vulgarica, bulgerica, bulgarieica, bulgarisch, bulgarian, bulgarien
bulgare » vulgare, bulgere, bulgariee, bulgarie, bulgarien
bulgeria » bulweria, bulgarian, bulgariae

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