Perhaps you should try some spelling variations:
"based implementation in computer program" » "and implementation in computer program" (Expand search), "based implementation and computer program" (Expand search), "based implementation of computer program" (Expand search), "based implementation _ computer program" (Expand search)
"using modeling python python programming" » "using modeling vpython python programming" (Expand search), "using modeling pitting python programming" (Expand search), "using model python python programming" (Expand search), "using modern python python programming" (Expand search), "using models python python programming" (Expand search), "using modeling pythons python programming" (Expand search), "using modeling piton python programming" (Expand search), "using modeling pitons 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: (("based implementation in computer program") OR ("using modeling python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based implementation in computer program\") OR (\"using modeling python python programming\"))".
• Removing quotes may allow a broader search: (( based implementation in computer program ) OR ( using modeling python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("based implementation in computer program") OR ("using modeling python python programming"))*.