Perhaps you should try some spelling variations:
"based computational case complexity problems" » "and computational case complexity problems" (Expand search), "by computational case complexity problems" (Expand search), "based computational case complex problems" (Expand search), "based computational case completion problems" (Expand search), "based computational case complete problems" (Expand search), "based computational bases complexity problems" (Expand search), "based computational cost complexity problems" (Expand search), "based computational code complexity problems" (Expand search), "based computational the complexity problems" (Expand search), "based computational and complexity problems" (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: (("based computational case complexity problems") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computational case complexity problems\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( based computational case complexity problems ) OR ( using coding python python programming ))*.