Perhaps you should try some spelling variations:
"dun lang trong snippets" » "dun dung trong snippets", "dun cong trong snippets", "dun dong trong snippets", "dun nang trong snippets", "den lang trong snippets", "dua lang trong snippets", "dun lang 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 lang 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 lang trong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun lang trong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun lang trong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.