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