Perhaps you should try some spelling variations:
"by computation using linear programming" » "by computations using linear programming" (Expand search), "by computation in linear programming" (Expand search), "by composition using linear programming" (Expand search), "by computational using linear programming" (Expand search), "of computation using linear programming" (Expand search), "_ computation using linear programming" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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: (("by computation using linear programming") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computation using linear programming\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( by computation using linear programming ) OR ( in python python python programming ))*.