Perhaps you should try some spelling variations:
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"using mcnp python python programming" » "using mcnp pythons python programming" (Expand search), "using mcnp piton python programming" (Expand search), "using mcnp pitons python programming" (Expand search), "using msn python python programming" (Expand search), "using monty python python programming" (Expand search), "using manim python python programming" (Expand search), "using mcnp5 python python programming" (Expand search), "using icnp python python programming" (Expand search), "using map python python programming" (Expand search)

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