Perhaps you should try some spelling variations:
"coder precoder scheme case problem" » "coder precoding scheme case problem" (Expand search), "coder decoder scheme case problem" (Expand search), "coder precoder scheme cases problem" (Expand search), "coder precoder scheme care problem" (Expand search), "coder precoder scheme scale problem" (Expand search), "coder precoder scheme based problem" (Expand search), "coder precoder schemes based problem" (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 scheme case problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder scheme case problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder scheme case problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder scheme case problem") OR ("api python python python programming"))*.