Perhaps you should try some spelling variations:
"dun cong trong snippets" » "dun cong thuong snippets", "dun cong trinh snippets", "dun dung trong snippets", "dung cong trong snippets", "duc cong trong snippets", "den cong trong snippets", "dun cong trong slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("dun cong trong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun cong trong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun cong trong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun cong trong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.