Perhaps you should try some spelling variations:
"and computational models computational program" » "and computational model computational program" (Expand search), "and computational modeling computational program" (Expand search), "and computational modelling computational program" (Expand search), "and computational modelo computacional program" (Expand search), "_ computational models computational program" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium python 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: (("and computational models computational program") OR ("using codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computational models computational program\") OR (\"using codigo python python programming\"))".
• Removing quotes may allow a broader search: (( and computational models computational program ) OR ( using codigo python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computational models computational program") OR ("using codigo python python programming"))*.