Perhaps you should try some spelling variations:
"dung luat lich snippets" » "dung luan lich snippets", "dung quat lich snippets", "dung cua lich snippets", "dung luat kinh snippets", "dung luat hinh snippets", "dung vat lich snippets", "dung luat lich 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: (((("dung luat lich snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung luat lich snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luat lich snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luat lich snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.