Perhaps you should try some spelling variations:
bulgeriae » bulgariae, bulgaria, bulgarian
bulgarien » bulgarian, bulgaria, bulgareien, vulgarien, bulgerien
bulgareiae » bulgariae, bulgaria, bulgarian, bulgareeiae, vulgareiae, bulgereiae
bulgaricae » bulgarica, bulgarische, bulgaria, bulgareicae, vulgaricae, bulgericae
vulgaricae » bulgarica, bulgariae, vulgaridad
bulgar » bulgare, vulgar, bulger
bulges » bulge

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: ((((bulgeriae OR bulgarien) OR bulgareiae) OR (bulgaricae OR vulgaricae)) OR (bulgar OR bulges)).
• Adding a wildcard symbol may retrieve word variants: ((((bulgeriae or bulgarien) or bulgareiae) or (bulgaricae or vulgaricae)) or (bulgar or bulges))*.