Perhaps you should try some spelling variations:
"coder coder summing operators problem" » "coder coder summing operators problema" (Expand search), "coder coder summing operations problems" (Expand search), "coder coder summing operating problems" (Expand search), "coder power summing operators problem" (Expand search), "coder codes hamming operators problem" (Expand search), "coder decoder summing operators problem" (Expand search), "code code summing operators problem" (Expand search), "decoder codec summing operators 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 coder summing operators problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder summing operators problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder summing operators problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder summing operators problem") OR ("api python python python programming"))*.