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