Perhaps you should try some spelling variations:
"and computation using lean program" » "and computations using lean program" (Expand search), "and computation in lean program" (Expand search), "and composition using lean program" (Expand search), "and computational using lean program" (Expand search), "of computation using lean program" (Expand search), "and computation using learn program" (Expand search), "and computation using lean programs" (Expand search), "and computation using loan program" (Expand search), "and computation using leaf program" (Expand search), "and computation using linear 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("and computation using lean program") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation using lean program\") OR (\"using python python python programming\"))*".
• Removing quotes may allow a broader search: (( and computation using lean program ) OR ( using python python python programming ))*.