Perhaps you should try some spelling variations:
bulgariae » bulgaria, bulgarian, bulgarie, bulgareiae, vulgariae, bulgeriae
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, vulgaricae, bulgericae
bulgar » bulgare, vulgar, bulger
vulgarien » bulgarien, bulgariens, vulgarisee

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 bulgaricae) OR (bulgar OR vulgarien)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgaricae) or (bulgar or vulgarien))*.