Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co hai cong snippets" » "co thai cong snippets", "co tai cong snippets", "co hai long snippets", "co dai cong snippets", "co hoi cong snippets", "o hai cong 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: (((("co hai cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co hai cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co hai cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co hai cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.