Perhaps you should try some spelling variations:
"coder coder binary sparse problem" » "coder coder binary space problem" (Expand search), "coder coder binary sparsity problem" (Expand search), "coder coder binary spanner problem" (Expand search), "coder coder binary stars problem" (Expand search), "coder coder binary search problem" (Expand search), "coder cover binary sparse problem" (Expand search), "coder over binary sparse problem" (Expand search), "coder under binary sparse problem" (Expand search), "coder decoder binary sparse problem" (Expand search), "code code binary sparse problem" (Expand search), "decoder codec binary sparse 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)

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 binary sparse problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder binary sparse problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder binary sparse problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder binary sparse problem") OR ("api python python python programming"))*.