Perhaps you should try some spelling variations:
"by computations using routing problem" » "by computation using routing problem" (Expand search), "by populations using routing problem" (Expand search), "by computations in routing problem" (Expand search), "by computational using routing problem" (Expand search), "of computations using routing problem" (Expand search), "by computacional using routing problem" (Expand search), "by computations using routine problem" (Expand search), "by computations nursing routing problem" (Expand search), "by computations using rotating 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("by computations using routing problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computations using routing problem\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( by computations using routing problem ) OR ( using coding python python programming ))*.