Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgeriae
bulgeriae » bulgaricae, bulgaria, bulgarian
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 bulgeriae) OR (bulgar OR vulgarien)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgeriae) or (bulgar or vulgarien))*.