Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, vulgariae, bulgeriae, bulgariaiae
bulgar » vulgar, bulger, bulgaria
bulgare » vulgare, bulgere, bulgariae, bulgarie, bulgaria
bulgarien » vulgarien, bulgerien, bulgariaien, bulgarian, bulgaria
bulgariaien » vulgariaien, bulgeriaien, bulgariaiaien, bulgarian, bulgaristen, bulgarischen

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