Perhaps you should try some spelling variations:
"developing computation and routing problem" » "developing computational and routing problem" (Expand search), "developing population and routing problem" (Expand search), "developing communication and routing problem" (Expand search), "developing computation of routing problem" (Expand search), "developing computation arc routing problem" (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: "((\"developing computation and routing problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( developing computation and routing problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("developing computation and routing problem") OR ("using coding python python programming"))*.