Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgeriae
bulgareiae » bulgaria, bulgarian, bulgarie, bulgareeiae, vulgareiae, bulgereiae
vulgaricae » bulgaricae, vulgaridad, vulgarise
bulgarica » bulgaria, bulgarian, bulgarien, bulgareica, vulgarica, bulgerica
bulgarisch » bulgarische, bulgarischen, bulgareisch, vulgarisch, bulgerisch
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: (((bulgariae OR bulgareiae) OR (vulgaricae OR (bulgarica OR bulgarisch))) OR (bulgar OR bulges)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgareiae) or (vulgaricae or (bulgarica or bulgarisch))) or (bulgar or bulges))*.