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