Perhaps you should try some spelling variations:
"using computational on rooting problem" » "and computational on rooting problem" (Expand search), "using computational one rooting problem" (Expand search), "using computacional on rooting problem" (Expand search), "using computational and rooting problem" (Expand search), "using computational on routing problem" (Expand search), "using computational on routing problems" (Expand search), "using computational on grooming 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: (("using computational on rooting problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational on rooting problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( using computational on rooting problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational on rooting problem") OR ("using coding python python programming"))*.