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