Perhaps you should try some spelling variations:
"auditive halluzinationen" » "optische halluzinationen", "zustande halluzinationen", "mit halluzinationen"
"echten halluzinationen" » "der halluzinationen", "mit halluzinationen", "von halluzinationen"
"echte halluzinationen" » "mit halluzinationen", "9 halluzinationen", "sind halluzinationen"
"und halluzinationen" » "und halluzination"

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: (((("auditive halluzinationen") OR ((((("echte halluzinationen") OR ("und halluzinationen"))) OR ("echten halluzinationen"))))) OR ("auditory hallucinations")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"auditive halluzinationen\") or (((((\"echte halluzinationen\") OR (\"und halluzinationen\"))) or (\"echten halluzinationen\"))))) or (\"auditory hallucinations\"))".
• Removing quotes may allow a broader search: (((( auditive halluzinationen ) or ((((( echte halluzinationen ) OR ( und halluzinationen ))) or ( echten halluzinationen ))))) or ( auditory hallucinations )).
• Adding a wildcard symbol may retrieve word variants: (((("auditive halluzinationen") or ((((("echte halluzinationen") OR ("und halluzinationen"))) or ("echten halluzinationen"))))) or ("auditory hallucinations"))*.