Perhaps you should try some spelling variations:
"based computations using computer program" » "based computation using computer program" (Expand search), "based computational using computer program" (Expand search), "based competition using computer program" (Expand search), "based populations using computer program" (Expand search), "based computations in computer program" (Expand search)
"using code _ python programming" » "using cone _ python programming" (Expand search), "using co _ python programming" (Expand search), "using co2 _ 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 computations using computer program") OR ("using code _ python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computations using computer program\") OR (\"using code _ python programming\"))".
• Removing quotes may allow a broader search: (( based computations using computer program ) OR ( using code _ python programming )).
• Adding a wildcard symbol may retrieve word variants: (("based computations using computer program") OR ("using code _ python programming"))*.