Perhaps you should try some spelling variations:
vulgarian » bulgarian, bulgarians, vulgaridad
bulgarica » bulgaria, bulgarisch, bulgarian, bulgareica, vulgarica, bulgerica
bulgariaiaiae » bulgareiaiaiae, vulgariaiaiae, bulgeriaiaiae
bulgar » bulgare, vulgar, bulger

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: ((bulgariaiaiae OR (vulgarian OR bulgarica)) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariaiaiae or (vulgarian or bulgarica)) or (bulgar or bulge))*.