Perhaps you should try some spelling variations:
"coder computational complexity and program" » "code computational complexity and program" (Expand search), "poder computacional complexity and program" (Expand search), "model computational complexity and program" (Expand search), "coder computational complexity and programs" (Expand search), "coder computational complexity grant program" (Expand search), "coder computational complexity based program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python python programming" (Expand search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("coder computational complexity and program") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder computational complexity and program\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( coder computational complexity and program ) OR ( using coding python python programming ))*.