Perhaps you should try some spelling variations:
"by computation in modeling problems" » "by computation in modelling problems" (Expand search), "by computation in modelling problem" (Expand search), "by computation in modeling process" (Expand search), "by computational in modeling problems" (Expand search), "of computation in modeling problems" (Expand search), "_ computation in modeling problems" (Expand search), "by computation and modeling problems" (Expand search), "by computation of modeling problems" (Expand search), "by imputation in modeling problems" (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: (("by computation in modeling problems") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computation in modeling problems\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( by computation in modeling problems ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("by computation in modeling problems") OR ("using python python python programming"))*.