Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgeriae
vulgarian » bulgarian, bulgarians, vulgaridad, vulgarisn, vulgarin, vulvarian
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgerische
vulgaria » vulgaris, vulgari, vulvaria
bulgaria » bulgareia, vulgaria, bulgeria
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: (((bulgariae OR vulgarian) OR (bulgarische OR (bulgaria OR vulgaria))) OR (bulgar OR bulge)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or vulgarian) or (bulgarische or (bulgaria or vulgaria))) or (bulgar or bulge))*.