Perhaps you should try some spelling variations:
"praktischer philosophie" » "praktische philosophie", "praktischen philosophie", "politischer philosophie"
"poetical philosophical" » "political philosophical", "optical philosophical", "practical philosophical"
"partie philosophical" » "martin philosophical", "practice philosophical", "martins 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: (("praktischer philosophie") OR ((("partie philosophical") OR ("poetical philosophical")))).
• Removing quotes may allow a broader search: (( praktischer philosophie ) or ((( partie philosophical ) or ( poetical philosophical )))).
• Adding a wildcard symbol may retrieve word variants: (("praktischer philosophie") or ((("partie philosophical") or ("poetical philosophical"))))*.