Perhaps you should try some spelling variations:
"dung hung dat snippets" » "dung chung dat snippets", "dung nhung dat snippets", "dung huong dat snippets", "dung dung dat snippets", "dung vung dat snippets", "dung hung dao snippets", "dung hung dat slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho code 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 hung dat snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hung dat snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hung dat snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hung dat snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.