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 hai data snippets" » "dung tai data snippets", "dung ha data snippets", "dung sai data snippets", "dung cai dat snippets", "dung a data snippets", "dung hoi dat snippets", "dung hai data 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 hai data snippets") or ("dung trong code snippets"))) or ("locating bug code snippets"))~.
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