Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgeriae
bulgariaica » bulgarica, bulgariia, bulgareiaica, vulgariaica, bulgeriaica
bulgar » bulgare, vulgar, bulger
bulgaria » bulgareia, vulgaria, bulgeria
bulgerie » bulgarie, bulgarien, algerie
bulges » bulge

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 bulgariaica) OR ((bulgar OR (bulgerie OR bulgaria)) OR bulges)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgariaica) or ((bulgar or (bulgerie or bulgaria)) or bulges))*.