Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians, bulgareiae, vulgariae, bulgarieiae
vulgareiae » vulgarise
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, bulgareicae, vulgaricae, bulgarieicae
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica, bulgarieica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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 vulgareiae) OR ((bulgaricae OR bulgaria) OR bulgarica)) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or vulgareiae) or ((bulgaricae OR bulgaria) or bulgarica)) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or vulgareiae) or ((bulgaricae OR bulgaria) or bulgarica)) or (bulgar or bulger))*.