Perhaps you should try some spelling variations:
bulgeriae » bulgariae, bulgarian, bulweria
bulgarie » bulgarien, bulgarian, vulgaris, bulgareie, vulgarie, bulgerie
bulgereiae » bulgariae
bulgaricae » bulgarische, bulgarian, bulgaricus, bulgariane, bulgariene, bulgareicae, vulgaricae, bulgericae
bulgarica » bulgarisch, bulgarian, bulgarien, 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: ((((bulgeriae OR (bulgarie OR bulgaria)) 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 (bulgarie OR bulgaria)) or bulgereiae) or (bulgaricae or bulgarica)) or (bulgar or bulges))".
• Adding a wildcard symbol may retrieve word variants: ((((bulgeriae or (bulgarie OR bulgaria)) or bulgereiae) or (bulgaricae or bulgarica)) or (bulgar or bulges))*.