Perhaps you should try some spelling variations:
"doi doi code snippets" » "doi doi cong snippets", "doi doi co snippets", "doi doi de snippets", "doi voi code snippets", "doi moi code snippets", "voi doi code snippets", "doi doi code slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using a snippets") or ("doi doi code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("doi doi code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( doi doi code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("doi doi code snippets"))) or ("locating bug code snippets"))*.