Perhaps you should try some spelling variations:
bulgeriae » bulgariae, bulgaria, bulweria
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgerian
bulgarie » bulgarien, bulgaria, vulgaris, bulgareie, vulgarie, bulgerie
bulgereiae » bulgariae
bulgaricae » bulgarische, bulgaria, bulgaricus, bulgariae, bulgariene, bulgareicae, vulgaricae, bulgericae
bulgarica » bulgaria, bulgarisch, bulgarien, bulgareica, vulgarica, bulgerica
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: (((((bulgeriae OR bulgarian) OR bulgarie) OR bulgereiae) OR (bulgaricae OR bulgarica)) OR (bulgar OR bulges)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((bulgeriae OR bulgarian) or bulgarie) or bulgereiae) or (bulgaricae or bulgarica)) or (bulgar or bulges))".
• Adding a wildcard symbol may retrieve word variants: (((((bulgeriae OR bulgarian) or bulgarie) or bulgereiae) or (bulgaricae or bulgarica)) or (bulgar or bulges))*.