Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
bulgariaica » bulgarica, bulgariia, bulgareiaica, bulgeriaica, bulgariaiaica
bulgar » bulgare, bulger, bulgaria
bulgarien » bulgareien, bulgerien, bulgariaien, bulgarian, bulgaria
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: ((vulgariae OR bulgariaica) OR ((bulgar OR (bulgarien OR vulgar)) OR bulges)).
• Adding a wildcard symbol may retrieve word variants: ((vulgariae or bulgariaica) or ((bulgar or (bulgarien or vulgar)) or bulges))*.