Perhaps you should try some spelling variations:
german » germans (Expand Search), gehrmann (Expand Search)
"Trading of East German political prisoners" » "Trading of East German politics prisoners" (Expand Search), "Trading of East German politicsl prisoners" (Expand Search), "Trading of East German politischl prisoners" (Expand Search), "Trading of East German politikl prisoners" (Expand Search)
"Trading of East German politica prisoners" » "Trading of East German politics prisoners" (Expand Search), "Trading of East German politisch prisoners" (Expand Search), "Trading of East German politik prisoners" (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: (("Trading of East German political prisoners") OR ("Trading of East German politica prisoners"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Trading of East German political prisoners\") OR (\"Trading of East German politica prisoners\"))".
• Removing quotes may allow a broader search: (( Trading of East German political prisoners ) OR ( Trading of East German politica prisoners )).
• Adding a wildcard symbol may retrieve word variants: (("Trading of East German political prisoners") OR ("Trading of East German politica prisoners"))*.