Perhaps you should try some spelling variations:
bulgarie » bulgarian, vulgaris, vulgare
bulgarien » bulgariann, vulgarisn, vulgaren, bulgarian
bulgareicae » bulgaricae, bulgariae, vulgareicae, vulgaresicae
bulgarica » bulgarisch, bulgarian
bulger » bulges
bulgare » vulgare, vulgares

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: (((bulgarie OR bulgarien) OR (bulgareicae OR (bulgaria OR bulgarica))) OR ((bulger OR bulgare) OR bulge)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgarie OR bulgarien) or (bulgareicae or (bulgaria or bulgarica))) or ((bulger or bulgare) or bulge))".
• Adding a wildcard symbol may retrieve word variants: (((bulgarie OR bulgarien) or (bulgareicae or (bulgaria or bulgarica))) or ((bulger or bulgare) or bulge))*.