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