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