Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, bulgaricae
bulgarie » bulgarien, bulgarian, vulgaris, bulgareie, vulgarie
bulgareie » bulgarien, bulgare, bulgares, bulgareeie, vulgareie
bulgarica » bulgarisch, bulgarian, bulgarien, bulgareica, vulgarica
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: ((vulgariae OR (((bulgarie OR bulgareie) OR (bulgarie OR bulgareie)) OR (bulgaria OR bulgarica))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vulgariae or (((bulgarie OR bulgareie) or (bulgarie OR bulgareie)) or (bulgaria or bulgarica))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((vulgariae or (((bulgarie OR bulgareie) or (bulgarie OR bulgareie)) or (bulgaria or bulgarica))) or (bulgar or bulger))*.