Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
vulgarische » bulgarische, bulgarischen, bulgarischer
bulgarians » bulgarian, bulgariens, bulgarien, vulgarians, bulgerians, bulgarieians
bulgaria » vulgaria, bulgeria, bulgarieia
bulgar » vulgar, bulger, bulgarie
bulgare » vulgare, bulgere, bulgariee, bulgarie, bulgarien

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 (vulgarische OR (bulgarians OR bulgaria))) OR ((bulgar OR bulgare) OR bulge)).
• Adding a wildcard symbol may retrieve word variants: ((vulgariae or (vulgarische or (bulgarians or bulgaria))) or ((bulgar or bulgare) or bulge))*.