Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, bulgareiae, vulgariae
bulgarie » bulgarien, bulgarian, vulgaris, bulgareie, vulgarie
bulgareiae » bulgarian, bulgaricae, bulgarean, bulgareeiae, vulgareiae
vulgaricae » bulgaricae, bulgarica, vulgaridad
bulgaria » bulgareia, vulgaria
bulgar » bulgare, vulgar
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 (bulgarie OR bulgaria)) OR bulgareiae) OR vulgaricae) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bulgariae or (bulgarie OR bulgaria)) or bulgareiae) or vulgaricae) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((((bulgariae or (bulgarie OR bulgaria)) or bulgareiae) or vulgaricae) or (bulgar or bulger))*.