Perhaps you should try some spelling variations:
"code complexity in computational program" » "code complexity and computational program" (Expand search), "code complexity _ computational program" (Expand search), "case complexity in computational program" (Expand search), "care complexity in computational program" (Expand search), "the complexity in computational program" (Expand search)
"using using python python programming" » "using using pythons python programming" (Expand search), "using using piton python programming" (Expand search), "using using pitons python programming" (Expand search), "using usando python python programming" (Expand search), "using in python python programming" (Expand search), "using fusing python python programming" (Expand search), "housing using python python programming" (Expand search), "nursing using 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: "((\"code complexity in computational program\") OR (\"using using python python programming\"))~".
• Removing quotes may allow a broader search: (( code complexity in computational program ) OR ( using using python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("code complexity in computational program") OR ("using using python python programming"))*.