Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, bulgareiae, vulgariae
bulgarie » bulgarian, vulgaris, bulgareie, vulgarie
bulgarien » bulgariann, vulgarisn, bulgarian, bulgareien, vulgarien
bulgar » bulgare, vulgar
bulgaria » bulgareia, vulgaria
vulgare » vulgar, vulgaris, vulgarly
bulger » bulge, 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: ((bulgariae OR (bulgarie OR bulgarien)) OR (((bulgar OR bulgaria) OR vulgare) OR bulger))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or (bulgarie OR bulgarien)) or (((bulgar or bulgaria) or vulgare) or bulger))*".