Perhaps you should try some spelling variations:
"halm friedrich goerdeler" » "heer friedrich goerdeler" (Expand Search), "la friedrich goerdeler" (Expand Search), "karl friedrich goerdeler" (Expand Search)
"lotz friedrich goerdeler" » "la friedrich goerdeler" (Expand Search), "glogau friedrich goerdeler" (Expand Search)
"karl dietrich goerdeler" » "kurt dietrich goerdeler" (Expand Search), "karl friedrich goerdeler" (Expand Search), "hans dietrich goerdeler" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"halm friedrich goerdeler\") OR (\"karl dietrich goerdeler\"))) OR (\"lotz friedrich goerdeler\"))~".
• Removing quotes may allow a broader search: (((( halm friedrich goerdeler ) OR ( karl dietrich goerdeler ))) OR ( lotz friedrich goerdeler ))~.
• Adding a wildcard symbol may retrieve word variants: (((("halm friedrich goerdeler") OR ("karl dietrich goerdeler"))) OR ("lotz friedrich goerdeler"))*.