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