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