Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, bulgareiae, vulgariae
bulgariaeian » bulgaricaeian, bulgarianian, bulgariansian, bulgarian, bulgarien, bulgariia, bulgareiaeian, vulgariaeian
bulgarie » bulgarien, bulgarian, vulgaris, bulgareie, vulgarie
bulgarean » bulgarian, bulgaren, bulgarians, bulgareean, vulgarean
bulgaria » bulgareia, vulgaria
bulgar » bulgare, vulgar
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 bulgarean) OR bulgaria))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or (bulgarie or ((bulgariaeian OR bulgarean) or bulgaria))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or (bulgarie or ((bulgariaeian OR bulgarean) or bulgaria))) or (bulgar or bulger))*.