Perhaps you should try some spelling variations:
"and computation using linear programming" » "and computations using linear programming" (Expand search), "and computation in linear programming" (Expand search), "and composition using linear programming" (Expand search), "and computational using linear programming" (Expand search), "of computation using linear programming" (Expand search)
"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)

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 linear programming") OR ("using mcnp python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation using linear programming\") OR (\"using mcnp python python programming\"))".
• Removing quotes may allow a broader search: (( and computation using linear programming ) OR ( using mcnp python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computation using linear programming") OR ("using mcnp python python programming"))*.