Perhaps you should try some spelling variations:
"polnisch biographical dictionary" » "polnische biographical dictionary" (Expand Search), "polnischen biographical dictionary" (Expand Search), "polnischer biographical dictionary" (Expand Search), "polnisch biographische dictionary" (Expand Search), "polnisch biographi dictionary" (Expand Search), "polnisch biographien dictionary" (Expand Search)
"polnischener biographie dictionary" » "polnischeener biographie dictionary" (Expand Search), "polnischenener biographie dictionary" (Expand Search), "polnischerener biographie dictionary" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("polnisch biographical dictionary") OR ("polnischener biographie dictionary"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"polnisch biographical dictionary\") OR (\"polnischener biographie dictionary\"))".
• Removing quotes may allow a broader search: (( polnisch biographical dictionary ) OR ( polnischener biographie dictionary )).
• Adding a wildcard symbol may retrieve word variants: (("polnisch biographical dictionary") OR ("polnischener biographie dictionary"))*.