Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam don den snippets" » "nam dong den snippets", "nam dan den snippets", "nam do den snippets", "nam don dien snippets", "nam don dep 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 don 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 don den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam don den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam don den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.