Perhaps you should try some spelling variations:
"codigo geant4 python coding programming" » "codigo geant4 python solving programming" (Expand search), "codigo geant4 python cone programming" (Expand search), "codigo geant4 python conic programming" (Expand search), "codigo gate python coding programming" (Expand search), "codigo geant4 python codigo programming" (Expand search), "codigo geant4 action coding programming" (Expand search), "codigo geant4 python code programming" (Expand search)
"python based python python programming" » "python based pythons python programming" (Expand search), "python based piton python programming" (Expand search), "python based pitons python programming" (Expand search), "action based python python programming" (Expand search), "python based path python programming" (Expand search), "python and python python programming" (Expand search), "python gate python 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: "((\"codigo geant4 python coding programming\") OR (\"python based python python programming\"))~".
• Removing quotes may allow a broader search: (( codigo geant4 python coding programming ) OR ( python based python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("codigo geant4 python coding programming") OR ("python based python python programming"))*.