Perhaps you should try some spelling variations:
"using computation and computing program" » "using computational and computing program" (Expand search), "using imputation and computing program" (Expand search), "using compilation and computing program" (Expand search), "using computation and consulting program" (Expand search), "using computation and computer program" (Expand search), "using computation and computador program" (Expand search), "using computation of computing program" (Expand search), "using computation grid computing program" (Expand search), "using computation fog computing program" (Expand search)
"using models in python programming" » "ising models in python programming" (Expand search), "using model in python programming" (Expand search), "nursing models in python programming" (Expand search), "using models _ python programming" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computation and computing program\") OR (\"using models in python programming\"))~".
• Removing quotes may allow a broader search: (( using computation and computing program ) OR ( using models in python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computation and computing program") OR ("using models in python programming"))*.