Perhaps you should try some spelling variations:
"_ computation in nonlinear programming" » "_ computation in linear programming" (Expand search), "_ computation and nonlinear programming" (Expand search), "_ computation of nonlinear programming" (Expand search), "_ imputation in nonlinear programming" (Expand search), "_ 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("_ computation in nonlinear programming") OR ("using codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"_ computation in nonlinear programming\") OR (\"using codigo python python programming\"))".
• Removing quotes may allow a broader search: (( _ computation in nonlinear programming ) OR ( using codigo python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("_ computation in nonlinear programming") OR ("using codigo python python programming"))*.