Perhaps you should try some spelling variations:
bulgariae » bulgarie, bulgarians, bulgarien, bulgareiae, vulgariae, bulgeriae
bulgareiae » bulgarie, bulgarean, bulgariia, bulgareeiae, vulgareiae, bulgereiae
bulgaricae » bulgarische, bulgarie, bulgarischen, bulgariene, bulgariee, bulgareicae, vulgaricae, bulgericae
bulgarian » hungarian, bulgareian, vulgarian, bulgerian
bulgarica » bulgarisch, bulgarien, bulgarie, bulgareica, vulgarica, bulgerica
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger
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 bulgareiae) OR (bulgaricae OR ((bulgarian OR bulgaria) OR bulgarica))) OR (bulgar OR bulges)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgareiae) or (bulgaricae or ((bulgarian OR bulgaria) or bulgarica))) or (bulgar or bulges))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgareiae) or (bulgaricae or ((bulgarian OR bulgaria) or bulgarica))) or (bulgar or bulges))*.