Perhaps you should try some spelling variations:
bulgarie » bulgarien, bulgarian, vulgaris
bulgarienns » bulgariennns, bulgariannns, vulgarisnns, bulgariens, bulgarien, bulgarians
bulgerian » bulgarian, bulgarians, eulerian, bulgeian, bulgesian
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: ((bulgaria OR (bulgarie OR (bulgarienns OR bulgerian))) OR (bulger OR vulgar)).
• Adding a wildcard symbol may retrieve word variants: ((bulgaria or (bulgarie or (bulgarienns or bulgerian))) or (bulger or vulgar))*.