Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgarian, bulgareicae, vulgaricae, bulgarieicae
vulgaris » vulgar
bulgareiae » bulgariae, bulgarian, bulgarie, bulgareeiae, vulgareiae, bulgarieeiae
vulgaricae » bulgarica, bulgariae, vulgaridad
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
bulger » bulge, bulges

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 (vulgaris OR bulgaria)) OR bulgareiae) OR vulgaricae) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((((bulgaricae or (vulgaris or bulgaria)) or bulgareiae) or vulgaricae) or (bulgar or bulger))*.