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