Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc sach cac snippets" » "toc sach code snippets", "hoc sach cac snippets", "doc sach cac snippets", "thuoc sach cac snippets", "toc sach cap snippets", "toc sach bac snippets", "toc sach 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: (((("toc sach cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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