Perhaps you should try some spelling variations:
"using computational patch routing problem" » "and computational patch routing problem" (Expand search), "using computational paths routing problem" (Expand search), "using computational data routing problem" (Expand search), "using computational pain routing problem" (Expand search), "using computational path routing problem" (Expand search), "using computational patch grafting problem" (Expand search), "using computational patrol routing problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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: "((\"using computational patch routing problem\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( using computational patch routing problem ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational patch routing problem") OR ("using python python python programming"))*.