Perhaps you should try some spelling variations:
"using computation in modeling problems" » "using computational in modeling problems" (Expand search), "using imputation in modeling problems" (Expand search), "using compilation in modeling problems" (Expand search), "using computation in modelling problems" (Expand search), "using computation in modelling problem" (Expand search), "using computation in modeling process" (Expand search), "using computation and modeling problems" (Expand search), "using computation of modeling problems" (Expand search)
"usando python python python programming" » "usando pythons python python programming" (Expand search), "usando piton python python programming" (Expand search), "usando pitons 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: "((\"using computation in modeling problems\") OR (\"usando python python python programming\"))~".
• Removing quotes may allow a broader search: (( using computation in modeling problems ) OR ( usando python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computation in modeling problems") OR ("usando python python python programming"))*.