Perhaps you should try some spelling variations:
"modeling computation using linear programming" » "modeling computational using linear programming" (Expand search), "modeling simulation using linear programming" (Expand search), "modeling notation using linear programming" (Expand search), "modeling computations using linear programming" (Expand search), "modeling computation in linear programming" (Expand search), "modeling composition using linear programming" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium 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: "((\"modeling computation using linear programming\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( modeling computation using linear programming ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("modeling computation using linear programming") OR ("using codigo python python programming"))*.