Perhaps you should try some spelling variations:
"dung thu chat snippets" » "dung thu code snippets", "ung thu chat snippets", "dung phu chat snippets", "dung thi chat snippets", "dung thu nhat snippets", "dung thu thuat snippets", "dung thuc chan snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung thu chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
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