Perhaps you should try some spelling variations:
"based computation using computer program" » "based computational using computer program" (Expand search), "based competition using computer program" (Expand search), "based compilation using computer program" (Expand search), "based computations using computer program" (Expand search), "based computation in computer program" (Expand search), "based composition using computer program" (Expand search)
"using model sum python programming" » "ising model sum python programming" (Expand search), "using modis sum python programming" (Expand search), "using mobile sum python programming" (Expand search), "using model slum python programming" (Expand search), "using model sam python programming" (Expand search), "using model slm 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: "((\"based computation using computer program\") OR (\"using model sum python programming\"))~".
• Removing quotes may allow a broader search: (( based computation using computer program ) OR ( using model sum python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based computation using computer program") OR ("using model sum python programming"))*.