Perhaps you should try some spelling variations:
"using computations using computer program" » "using computational using computer program" (Expand search), "using computacional using computer program" (Expand search), "using imputation using computer program" (Expand search), "using computation using computer program" (Expand search), "using populations using computer program" (Expand search), "using computations in computer program" (Expand search)
"using model lambda python programming" » "using modelo lambda python programming" (Expand search), "using model land python programming" (Expand search), "using modelo lambdacdm python programming" (Expand search), "ising model lambda python programming" (Expand search), "using modis lambda python programming" (Expand search), "using mobile lambda 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: (("using computations using computer program") OR ("using model lambda python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computations using computer program\") OR (\"using model lambda python programming\"))".
• Removing quotes may allow a broader search: (( using computations using computer program ) OR ( using model lambda python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computations using computer program") OR ("using model lambda python programming"))*.