Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam theo so snippets" » "nam thuoc so snippets", "pham theo so snippets", "kem theo so snippets", "nam theo bo snippets", "nam theo doi snippets", "nam theo don 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 theo so 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 theo so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam theo so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam theo so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.