Perhaps you should try some spelling variations:
"coder the complexity database of" » "coder the complex databases of" (Expand search), "coder the complexity data of" (Expand search), "coder the complexity database _" (Expand search), "code the complexity database of" (Expand search), "cover the complexity database of" (Expand search), "poder the complexity database of" (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)

You may be able to get more results by adjusting your search query.

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