Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians, bulgareiae, vulgariae, bulgarieiae
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene, bulgareicae, vulgaricae, bulgarieicae
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica, bulgarieica
bulgariaica » bulgariia, bulgareiaica, vulgariaica, bulgarieiaica
bulgareicae » bulgareeicae, vulgareicae, bulgarieeicae
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 (((bulgaricae OR bulgareicae) OR bulgaria) OR (bulgarica OR bulgariaica))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or (((bulgaricae OR bulgareicae) or bulgaria) or (bulgarica or bulgariaica))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or (((bulgaricae OR bulgareicae) or bulgaria) or (bulgarica or bulgariaica))) or (bulgar or bulger))*.