Perhaps you should try some spelling variations:
"using computational on sio2 program" » "and computational on sio2 program" (Expand search), "using computational one sio2 program" (Expand search), "using computacional on sio2 program" (Expand search), "using computational and sio2 program" (Expand search), "using computational on 2 program" (Expand search), "using computational on 2012 program" (Expand search), "using computational on 2002 program" (Expand search)
"usando python python python programming" » "usando pythons python python programming" (Expand search), "usando piton python python programming" (Expand search), "usando pitons 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: "((\"using computational on sio2 program\") OR (\"usando python python python programming\"))~".
• Removing quotes may allow a broader search: (( using computational on sio2 program ) OR ( usando python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational on sio2 program") OR ("usando python python python programming"))*.