Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan luan voi snippets" » "doanh luan voi snippets", "dung luan voi snippets", "tang luan voi snippets", "dan luan von snippets", "dan luan doi snippets", "dan luan vi 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: (((("dan luan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan luan voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan luan voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan luan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.