Perhaps you should try some spelling variations:
"trinh hung tran snippets" » "trinh nhung tran snippets", "trinh huong tran snippets", "trinh khung tran snippets", "trinh quang tran snippets", "trinh hung thang snippets", "trinh hung tran slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung 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: (((("trinh hung tran snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh hung tran snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
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