Perhaps you should try some spelling variations:
"hung tran tu snippets" » "huong tran tu snippets", "quang tran tu snippets", "hung thang tu snippets", "hung tran tuan snippets", "hung tran thuy snippets", "hung tran thi snippets", "hung tran tu slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug core snippets", "dung bug code slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung bug code snippets") or ("hung tran tu snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung bug code snippets") OR ("hung tran tu snippets"))) OR ("locating bug code snippets")).
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