Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam dao den snippets" » "nam dan den snippets", "nam sao den snippets", "nam cao den snippets", "nam dao dan snippets", "nam day den 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: (((("nam dao den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam dao den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam dao den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam dao den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.