Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban voi da snippets" » "ban moi da snippets", "ba voi da snippets", "ban noi da snippets", "ban voi dac snippets", "ban voi dai snippets", "ban voi dan 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: (((("ban voi 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: (((("ban voi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban voi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban voi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.