Perhaps you should try some spelling variations:
"modeling complexity in coverage in" » "model complexity in coverage in" (Expand search), "modeling complex in coverage in" (Expand search), "governing complexity in coverage in" (Expand search), "modeling complexity and coverage in" (Expand search), "modeling complexity in coverage 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modeling complexity in coverage in\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( modeling complexity in coverage in ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("modeling complexity in coverage in") OR ("using coding python python programming"))*.