Perhaps you should try some spelling variations:
"based computational on integer programming" » "and computational on integer programming" (Expand search), "by computational on integer programming" (Expand search), "based computational on linear programming" (Expand search), "based computational one integer programming" (Expand search), "based computacional on integer programming" (Expand search), "based computational and integer programming" (Expand search), "based computational non integer programming" (Expand search), "based computational an integer programming" (Expand search), "based computational of integer 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 on integer programming") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computational on integer programming\") OR (\"using python python python programming\"))*".
• Removing quotes may allow a broader search: (( based computational on integer programming ) OR ( using python python python programming ))*.