Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarian, bulgarie, bulgareicae, vulgaricae, bulgarieicae
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgarieische
bulgareiae » bulgariae, bulgarian, bulgarie, bulgareeiae, vulgareiae, bulgarieeiae
bulgareica » bulgarica, bulgariia, bulgareeica, vulgareica, bulgarieeica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
bulger » 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: ((((bulgaricae OR bulgarische) OR bulgareiae) OR ((bulgaricae OR bulgarische) OR (bulgareica OR bulgaria))) OR (bulgar OR (bulger OR bulge))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bulgaricae OR bulgarische) or bulgareiae) or ((bulgaricae OR bulgarische) or (bulgareica or bulgaria))) or (bulgar or (bulger or bulge)))".
• Adding a wildcard symbol may retrieve word variants: ((((bulgaricae OR bulgarische) or bulgareiae) or ((bulgaricae OR bulgarische) or (bulgareica or bulgaria))) or (bulgar or (bulger or bulge)))*.