Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi van do snippets" » "do van do snippets", "doi va do snippets", "doi ban do snippets", "doi van dao snippets", "doi van de snippets", "doi van du snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("doi van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi van do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi van do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.