Perhaps you should try some spelling variations:
"elisa determination case" » "la determination case", "a determination case", "data determination case", "elisa determination based", "elisa determination phase", "elisa determination c"
"treblinka extermination camp" » "treblinka extermination camps", "treblinka determination cad", "treblinka extermination 14"

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: (((("treblinka extermination camp") OR ("elisa determination case"))) OR ("treblinka extermination _")).
• Removing quotes may allow a broader search: (((( treblinka extermination camp ) or ( elisa determination case ))) or ( treblinka extermination _ )).
• Adding a wildcard symbol may retrieve word variants: (((("treblinka extermination camp") or ("elisa determination case"))) or ("treblinka extermination _"))*.