Perhaps you should try some spelling variations:
"and computation using clustering problem" » "and computation using covering problem" (Expand search), "and computations using clustering problem" (Expand search), "and computation in clustering problem" (Expand search), "and composition using clustering problem" (Expand search), "and computation and clustering problem" (Expand search), "and computation means clustering problem" (Expand search), "and computational using clustering problem" (Expand search), "of computation using clustering problem" (Expand search)
"using only python python programming" » "using only pythons python programming" (Expand search), "using only piton python programming" (Expand search), "using only pitons python programming" (Expand search), "using monty python python programming" (Expand search), "using on python python programming" (Expand search), "using online 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: "((\"and computation using clustering problem\") OR (\"using only python python programming\"))~".
• Removing quotes may allow a broader search: (( and computation using clustering problem ) OR ( using only python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computation using clustering problem") OR ("using only python python programming"))*.