Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van nuoi da snippets" » "van noi da snippets", "vat nuoi da snippets", "ban nuoi da snippets", "van nuoi day snippets", "van nuoi ga 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: (((("van nuoi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van nuoi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van nuoi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van nuoi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.