Perhaps you should try some spelling variations:
"and computational data clustering problem" » "and computational and clustering problem" (Expand search), "and compositional data clustering problem" (Expand search), "and computational art clustering problem" (Expand search), "and computational data covering problem" (Expand search), "_ computational data clustering problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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 computational data clustering problem\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( and computational data clustering problem ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational data clustering problem") OR ("using python python python programming"))*.