Perhaps you should try some spelling variations:
"auditive halluzinationen" » "optische halluzinationen", "zustande halluzinationen", "echte halluzinationen"
"auditing halluzinationen" » "und halluzinationen", "sind halluzinationen", "zustande halluzinationen"
"auditory hallucination" » "gustatory hallucinations", "olfactory hallucinations"
"auditory hallucinations" » "gustatory hallucinationss", "olfactory hallucinationss"

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