Perhaps you should try some spelling variations:
vulgariae » bulgariae, vulgarise, vulgaridad
bulgaricae » bulgarische, bulgarian, bulgarischen, bulgariane, bulgareicae, vulgaricae
bulgarie » bulgarian, vulgaris, vulgare, bulgareie, vulgarie
bulgarien » bulgariann, vulgarisn, vulgaren, bulgarian, bulgareien, vulgarien
bulgarica » bulgarisch, bulgarian, 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 bulgaricae) OR ((bulgarie OR bulgarie) OR (bulgaria OR (bulgarica OR bulgarien)))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((vulgariae OR bulgaricae) or ((bulgarie or bulgarie) or (bulgaria or (bulgarica or bulgarien)))) or (bulgar or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((vulgariae OR bulgaricae) or ((bulgarie or bulgarie) or (bulgaria or (bulgarica or bulgarien)))) or (bulgar or bulger))*.