Perhaps you should try some spelling variations:
"dung vbung code snippets" » "dung vung code snippets", "dung trung code snippets", "dung chung code snippets", "dung vbung code slippers"
"dung dat trong snippets" » "dung dot trong snippets", "dung vat trong snippets", "dung cay trong snippets", "dung va trong snippets", "dung tai trong snippets", "dung dat trong slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung vbung code snippets") or ("dung dat trong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vbung code snippets") OR ("dung dat trong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vbung code snippets ) or ( dung dat trong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vbung code snippets") or ("dung dat trong snippets"))) or ("locating bug code snippets"))*.