Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, bulgareiae, vulgariae, bulgarieiae
bulgareiae » bulgarian, bulgarie, bulgaricae, bulgareeiae, vulgareiae, bulgarieeiae
vulgaricae » bulgaricae, vulgaridad, vulgarise
bulgarica » bulgarian, bulgarien, bulgarie, bulgareica, vulgarica, bulgarieica
bulgarisch » bulgarische, bulgarischen, bulgareisch, vulgarisch, bulgarieisch
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 bulgaria) OR bulgareiae) OR (vulgaricae OR (bulgarica OR bulgarisch))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bulgariae OR bulgaria) or bulgareiae) or (vulgaricae or (bulgarica or bulgarisch))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((((bulgariae OR bulgaria) or bulgareiae) or (vulgaricae or (bulgarica or bulgarisch))) or (bulgar or bulger))*.