Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgarieiae
bulgarieische » bulgarische, bulgaristischen, bulgarischen, bulgareieische, vulgarieische, bulgarieieische
bulgareica » bulgarica, bulgaricae, bulgariia, bulgareeica, vulgareica, bulgarieeica
bulgariaica » bulgarica, bulgariia, bulgareiaica, vulgariaica, bulgarieiaica
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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 ((bulgarieische OR bulgaria) OR (bulgareica OR bulgariaica))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or ((bulgarieische or bulgaria) or (bulgareica or bulgariaica))) or (bulgar or bulger))*.