Perhaps you should try some spelling variations:
"using computation in ranking problems" » "using computational in ranking problems" (Expand search), "using imputation in ranking problems" (Expand search), "using compilation in ranking problems" (Expand search), "using computation in ranking problem" (Expand search), "using computation in banking problems" (Expand search), "using computation in drinking problems" (Expand search), "using computation and ranking problems" (Expand search), "using computation of ranking problems" (Expand search), "using computation on ranking problems" (Expand search), "using computation in rankin problems" (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: "((\"using computation in ranking problems\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( using computation in ranking problems ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computation in ranking problems") OR ("using coding python python programming"))*.