Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam phau con snippets" » "nam phan con snippets", "nham phat con snippets", "nam thu con snippets", "nam phai con snippets", "nam phan cong snippets", "nam pham cong 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 phau 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 phau con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam phau con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam phau con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.