Perhaps you should try some spelling variations:
"and introduction and computation program" » "and introduction and computational program" (Expand search), "and introduction and computational programs" (Expand search), "and introduction and compensation program" (Expand search), "an introduction and computation program" (Expand search), "and introduction to computation program" (Expand search), "and introduction of computation 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and introduction and computation program\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( and introduction and computation program ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and introduction and computation program") OR ("using codigo python python programming"))*.