Perhaps you should try some spelling variations:
"an introduction in computer programrs" » "an introduction in computer programs" (Expand search), "an introduction in computer programmers" (Expand search), "an introduction in computer programmes" (Expand search), "an introduction and computer programrs" (Expand search), "an introduction to computer programrs" (Expand search), "an introduction of computer programrs" (Expand search), "an introduction _ computer programrs" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("an introduction in computer programrs") OR ("advanced python python computer programme"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"an introduction in computer programrs\") OR (\"advanced python python computer programme\"))".
• Removing quotes may allow a broader search: (( an introduction in computer programrs ) OR ( advanced python python computer programme )).
• Adding a wildcard symbol may retrieve word variants: (("an introduction in computer programrs") OR ("advanced python python computer programme"))*.