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