Perhaps you should try some spelling variations:
bulgariae » bulgaria, bulgarian, bulgarians, vulgariae, bulgariaiae
bulgaricae » bulgarica, bulgarische, bulgaria, vulgaricae, bulgariaicae
bulgar » vulgar, bulgaria
bulgarie » vulgarie, bulgariaie, bulgarien, bulgaria, bulgarian
bulgare » vulgare, bulgariae, bulgarien, bulgaria, vulgares
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 bulgaricae) OR (((bulgar OR bulgarie) OR (bulgare OR vulgare)) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or bulgaricae) or (((bulgar OR bulgarie) or (bulgare or vulgare)) or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgaricae) or (((bulgar OR bulgarie) or (bulgare or vulgare)) or bulger))*.