Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam do con snippets" » "nam dao con snippets", "nam doi con snippets", "nam bo con snippets", "nam do cong snippets", "nam do son snippets", "nam do co 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 do con 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 do con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam do con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam do con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.