Perhaps you should try some spelling variations:
"coder coding gradient based complexity" » "coder coding gradient case complexity" (Expand search), "coder coding gradient and complexity" (Expand search), "coder coding gradient based complexes" (Expand search), "coder flooding gradient based complexity" (Expand search), "coder using gradient based complexity" (Expand search), "coder caatinga gradient based complexity" (Expand search), "modern coding gradient based complexity" (Expand search), "color coding gradient based complexity" (Expand search), "odor coding gradient based complexity" (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 gradient based complexity") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding gradient based complexity\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coding gradient based complexity ) OR ( api python python python programming ))*.