Perhaps you should try some spelling variations:
vulgariane » bulgarian, bulgarians, bulgariae
bulgarica » bulgaria, bulgarisch, bulgarian, bulgareica, vulgarica, bulgerica
bulgar » bulgare, vulgar, bulger
bulgese » 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: ((vulgariane OR bulgarica) OR ((bulgar OR bulge) OR bulgese)).
• Adding a wildcard symbol may retrieve word variants: ((vulgariane or bulgarica) or ((bulgar or bulge) or bulgese))*.