Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach va cao snippets" » "sach va code snippets", "sach xa cao snippets", "sach ha cao snippets", "sach dao cao snippets", "sach va cac snippets", "sach va co snippets", "sach va dao snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("sach va cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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