Perhaps you should try some spelling variations:
"and computation in subsampling program" » "and computation in sampling program" (Expand search), "and computational in subsampling program" (Expand search), "of computation in subsampling program" (Expand search), "and computation and subsampling program" (Expand search), "and computation of subsampling program" (Expand search), "and imputation in subsampling program" (Expand search), "and computation using subsampling program" (Expand search), "and computation the subsampling program" (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 computation in subsampling program\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( and computation in subsampling program ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computation in subsampling program") OR ("using python python python programming"))*.