Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, vulgariae, bulgariaiae, bulgarieiae
vulgarische » bulgarische, bulgarischen, bulgarischer
vulgarian » bulgarian, bulgarians, vulgaridad, vulgarisn, vulgarin
vulgaria » bulgaria, vulgaris, vulgari
bulgar » vulgar, bulgaria, bulgarie
bulgare » vulgare, bulgariae, bulgariee, bulgarie, bulgarien
bulger » 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: ((bulgariae OR (vulgarische OR (vulgarian OR vulgaria))) OR (((bulgar OR bulger) OR bulgare) OR bulge)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or (vulgarische or (vulgarian or vulgaria))) or (((bulgar or bulger) or bulgare) or bulge))*.