Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat vien da snippets" » "dat viet da snippets", "dan vien da snippets", "dat dien da snippets", "dat vien dai snippets", "dat hien dai 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: (((("dat vien 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: (((("dat vien da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat vien da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat vien da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.