Perhaps you should try some spelling variations:
"practical philosophical" » "political philosophical", "critical philosophical", "poetical philosophical"
"politische philosophie" » "political philosophy"
"practice philosophical" » "partie philosophical", "pragmatics philosophical", "practice philosophy"

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