Perhaps you should try some spelling variations:
"dung trong code snippets" » "dung trong cong snippets", "dung trong co snippets", "dung trong che snippets", "dung trong code slippers"
"dung cua phan snippets" » "dung luan phan snippets", "dung cho phan snippets", "dung cua nhan snippets", "dung cua phap snippets", "dung cua han snippets", "dung cua phan 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 cua phan snippets") or ("dung trong code snippets"))) or ("locating bug code snippets"))~.
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