Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgeriae
bulgariaica » bulgarica, bulgariia, bulgareiaica, vulgariaica, bulgeriaica
bulgar » bulgare, vulgar, bulger
bulgerie » bulgarie, bulgarien, bulgaria
vulgaris » bulgaria, vulgar

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 bulgariaica) OR ((bulgar OR (bulgerie OR vulgaris)) OR (bulges OR bulge))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or bulgariaica) or ((bulgar or (bulgerie or vulgaris)) or (bulges OR bulge)))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgariaica) or ((bulgar or (bulgerie or vulgaris)) or (bulges OR bulge)))*.