Perhaps you should try some spelling variations:
"and computational using nonlinear programing" » "and computational using nonlinear programming" (Expand search), "and computational using linear programing" (Expand search), "and computational using linear programming" (Expand search), "and computation using nonlinear programing" (Expand search), "and computations using nonlinear programing" (Expand search), "and computacional usinas nonlinear programing" (Expand search), "_ computational using nonlinear programing" (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: "((\"and computational using nonlinear programing\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( and computational using nonlinear programing ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational using nonlinear programing") OR ("using codigo python python programming"))*.