Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung ngon da snippets" » "dung nguon da snippets", "dung ngan da snippets", "dung ngo da snippets", "dung ngon dan snippets", "dung ngon va snippets", "dung ngon doc 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: (((("dung ngon 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: (((("dung ngon da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ngon da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ngon da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.