Perhaps you should try some spelling variations:
"modeling complexity in python programming" » "model complexity in python programming" (Expand search), "modeling complex in python programming" (Expand search), "governing complexity in python programming" (Expand search), "modeling complexity and python programming" (Expand search), "modeling complexity _ python programming" (Expand search)
"python code python python programming" » "python code pythons python programming" (Expand search), "python code piton python programming" (Expand search), "python code pitons python programming" (Expand search), "python codigo python python programming" (Expand search), "python pacote 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: (("modeling complexity in python programming") OR ("python code python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modeling complexity in python programming\") OR (\"python code python python programming\"))*".
• Removing quotes may allow a broader search: (( modeling complexity in python programming ) OR ( python code python python programming ))*.