Perhaps you should try some spelling variations:
"based computational of linear programming" » "and computational of linear programming" (Expand search), "by computational of linear programming" (Expand search), "based computational one linear programming" (Expand search), "based computational _ linear programming" (Expand search), "based computational 3d linear programming" (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: (("based computational of linear programming") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computational of linear programming\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( based computational of linear programming ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("based computational of linear programming") OR ("using python python python programming"))*.