Perhaps you should try some spelling variations:
"codigo geant4 python python codigo" » "codigo gate python python codigo" (Expand search), "codigo geant4 pythons python codigo" (Expand search), "codigo geant4 piton python codigo" (Expand search), "codigo geant4 pitons python codigo" (Expand search), "codigo geant4 python python coding" (Expand search), "codigo geant4 python python code" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python 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: (("codigo geant4 python python codigo") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"codigo geant4 python python codigo\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( codigo geant4 python python codigo ) OR ( in python python python programming ))*.