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"
"hoan dong code snippets" » "hoat dong code snippets", "hoa dong code snippets", "hoang duong code snippets", "hoan dong co snippets", "hoan dong che snippets", "hoan dong cong snippets", "hoan dong 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: (((("hoan dong code snippets") or ("dung trong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoan dong code snippets") OR ("dung trong code snippets"))) OR ("locating bug code snippets")).
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