Perhaps you should try some spelling variations:
"by computation using activity program" » "by computations using activity program" (Expand search), "by computation in activity program" (Expand search), "by composition using activity program" (Expand search), "by computational using activity program" (Expand search), "of computation using activity program" (Expand search), "_ computation using activity program" (Expand search), "by computation fishing activity program" (Expand search), "by computation guiding activity program" (Expand search), "by computation mining activity program" (Expand search)
"using code from python programming" » "using code from pathogen programming" (Expand search), "using code from anthony programming" (Expand search), "using cone from python programming" (Expand search), "using co from python programming" (Expand search), "using co2 from python programming" (Expand search), "using code form 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: "((\"by computation using activity program\") OR (\"using code from python programming\"))~".
• Removing quotes may allow a broader search: (( by computation using activity program ) OR ( using code from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computation using activity program") OR ("using code from python programming"))*.