Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cac toc sach snippets" » "cac hoc sach snippets", "cac doc sach snippets", "cac thuoc sach snippets", "cac toi sach snippets", "cac nuoc sach snippets", "cac thoi sach snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("cac toc sach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac toc sach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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