Perhaps you should try some spelling variations:
"coder coding sparse coding problem" » "coder coding sparse coding problems" (Expand search), "coder coding sparse coping problem" (Expand search), "coder coding sparse loading problem" (Expand search), "coder coding scale coding problem" (Expand search), "coder combining sparse coding problem" (Expand search), "modern coding sparse coding problem" (Expand search), "color coding sparse coding problem" (Expand search), "odor coding sparse coding 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 coding sparse coding problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding sparse coding problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coding sparse coding problem ) OR ( api python python python programming ))*.