Perhaps you should try some spelling variations:
"dung hoa phan snippets" » "dung khoa phan snippets", "duong hoa phan snippets", "dung hoai phan snippets", "dung hoa dan snippets", "dung co phan snippets", "dung hoa phan slippers"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets", "dung cac 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: (((("dung hoa phan snippets") or ("dung cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hoa phan snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets")).
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