Perhaps you should try some spelling variations:
"using computation in computer program" » "using computational in computer program" (Expand search), "using imputation in computer program" (Expand search), "using compilation in computer program" (Expand search), "using computation and computer program" (Expand search), "using computation of computer program" (Expand search), "using computation _ computer program" (Expand search)
"using nodes from python programming" » "using anodes from python programming" (Expand search), "using nades from python programming" (Expand search), "using node from python programming" (Expand search), "using nodes from pathogen programming" (Expand search), "using nodes from anthony programming" (Expand search), "using codes from 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: "((\"using computation in computer program\") OR (\"using nodes from python programming\"))~".
• Removing quotes may allow a broader search: (( using computation in computer program ) OR ( using nodes from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computation in computer program") OR ("using nodes from python programming"))*.