Perhaps you should try some spelling variations:
"dung duong thu snippets" » "dung dong thu snippets", "dong duong thu snippets", "dung dung thu snippets", "dung duong thuy snippets", "dung duong thi snippets", "dung luong thuc snippets", "dung duong thu slippers"
"dung va java snippets" » "dung java java snippets", "dung va java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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