Perhaps you should try some spelling variations:
"coder precoder scheffer learning problems" » "coder precoder scheme learning problems" (Expand search), "coder precoder schemes learning problems" (Expand search), "coder precoder scholar learning problems" (Expand search), "coder precoder scheffer karin problems" (Expand search), "coder precoder scheffer learning process" (Expand search), "coder precoder scheffer learning projects" (Expand search), "coder decoder scheffer learning problems" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search), "manim python python python programming" (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: (("coder precoder scheffer learning problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder scheffer learning problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder scheffer learning problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder scheffer learning problems") OR ("api python python python programming"))*.