Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians
bulgariaeian » bulgaricaeian, bulgarianian, bulgariansian, bulgarian, bulgarien, bulgarean
bulgarie » bulgarien, bulgarian, vulgaris
bulgareica » bulgarica, bulgaricae, bulgariia, vulgareica, bulgarienica, vulgaresica
bulgare » vulgare, bulgarien, vulgares
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 (bulgarie OR (bulgariaeian OR (bulgareica OR bulgaria)))) OR (bulgare OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or (bulgarie or (bulgariaeian or (bulgareica OR bulgaria)))) or (bulgare or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or (bulgarie or (bulgariaeian or (bulgareica OR bulgaria)))) or (bulgare or bulger))*.