Perhaps you should try some spelling variations:
"an introduction and computer programing" » "an introduction and computer programming" (Expand search), "an introduction and computers programming" (Expand search), "an introduction and computer programs" (Expand search), "an introduction to computer programing" (Expand search), "an introduction of computer programing" (Expand search), "an introduction _ computer programing" (Expand search), "an introduction and computer programaing" (Expand search)
"advanced python python computer program" » "advanced method python computer program" (Expand search), "advanced path python computer program" (Expand search), "advanced symphony python computer program" (Expand search), "advanced pythons python computer program" (Expand search), "advanced piton python computer program" (Expand search), "advanced pitons python computer program" (Expand search), "advanced python python computer programa" (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 and computer programing") OR ("advanced python python computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"an introduction and computer programing\") OR (\"advanced python python computer program\"))".
• Removing quotes may allow a broader search: (( an introduction and computer programing ) OR ( advanced python python computer program )).
• Adding a wildcard symbol may retrieve word variants: (("an introduction and computer programing") OR ("advanced python python computer program"))*.