Perhaps you should try some spelling variations:
"an introduction in computers programming" » "an introduction in computer programming" (Expand search), "an introduction in computer program" (Expand search), "an introduction in computer programs" (Expand search), "an introduction and computers programming" (Expand search), "an introduction to computers programming" (Expand search), "an introduction of computers programming" (Expand search), "an introduction on computers programming" (Expand search)
"advanced python python computer programing" » "advanced python python computer programming" (Expand search), "advanced python python computer program" (Expand search), "advanced python python computer programs" (Expand search), "advanced method python computer programing" (Expand search), "advanced path python computer programing" (Expand search), "advanced symphony python computer programing" (Expand search), "advanced pythons python computer programing" (Expand search), "advanced piton python computer programing" (Expand search), "advanced pitons python computer programing" (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: "((\"an introduction in computers programming\") OR (\"advanced python python computer programing\"))~".
• Removing quotes may allow a broader search: (( an introduction in computers programming ) OR ( advanced python python computer programing ))~.
• Adding a wildcard symbol may retrieve word variants: (("an introduction in computers programming") OR ("advanced python python computer programing"))*.