Perhaps you should try some spelling variations:
bulgaars » bulgar
bulgare » vulgare, bulgarien, bulgaria
vulgarien » bulgarien, bulgariens, vulgarises
vulgarisee » vulgarise, vulgarises, vulgaris
bulgerie » bulgarien, bulgariae, bulgaria, bulgeie, bulgesie
bulgarie » bulgarien, bulgaria, bulgarian
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: ((bulgaars OR ((bulgare OR (vulgarien OR vulgarisee)) OR bulgerie)) OR (bulgarie OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgaars or ((bulgare or (vulgarien OR vulgarisee)) or bulgerie)) or (bulgarie or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgaars or ((bulgare or (vulgarien OR vulgarisee)) or bulgerie)) or (bulgarie or bulger))*.