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

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