Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc dai cong snippets" » "toc dai cuong snippets", "toc tai cong snippets", "toc doi cong snippets", "hoc dai cong snippets", "toc dao cong snippets", "loc dai 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: (((("toc dai 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: (((("toc dai cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc dai cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc dai cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.