Perhaps you should try some spelling variations:
"dung lang trong snippets" » "dung dung trong snippets", "dung cong trong snippets", "dung dong trong snippets", "dung dang trong snippets", "dung nang trong snippets", "dung land trong snippets", "dung lang trong slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets"

Try widening your search to All Fields.

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