Perhaps you should try some spelling variations:
"praktische philosophical" » "practice philosophical", "praktischen philosophie", "praktischer philosophie"
"praktische philosophie" » "politische philosophie"
"partie philosophical" » "practice philosophical", "martins philosophical", "partly philosophicall"
"martin philosophical" » "martins philosophical", "martin's philosophical", "maatian philosophical"

Try widening your search to All Fields.

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: (("praktische philosophie") OR ((("praktische philosophical") OR ((("partie philosophical") OR ("martin philosophical")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"praktische philosophie\") or (((\"praktische philosophical\") or (((\"partie philosophical\") OR (\"martin philosophical\"))))))".
• Removing quotes may allow a broader search: (( praktische philosophie ) or ((( praktische philosophical ) or ((( partie philosophical ) OR ( martin philosophical )))))).
• Adding a wildcard symbol may retrieve word variants: (("praktische philosophie") or ((("praktische philosophical") or ((("partie philosophical") OR ("martin philosophical"))))))*.