Perhaps you should try some spelling variations:
bulgeriae » bulgariae, bulgaricae, bulgaria
bulgar » bulger, bulgaria, bulgarie
bulgare » bulgere, bulgariae, bulgariee, bulgarie, vulgare, bulgaria
bulgarien » bulgerien, bulgariaien, bulgarieien, bulgarian, bulgaria

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