Perhaps you should try some spelling variations:
"testing functions _ computational code" » "testing functions _ computational model" (Expand search), "testing functions _ computational cost" (Expand search), "testing functions _ computational models" (Expand search), "testing functional _ computational code" (Expand search), "iterating functions _ computational code" (Expand search), "teaching functions _ computational code" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python 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: "((\"testing functions _ computational code\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( testing functions _ computational code ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("testing functions _ computational code") OR ("using coding python python programming"))*.