Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"toc cac nhan snippets" » "toc ca nhan snippets", "toc cac nha snippets", "toc cam nhan snippets", "hoc cac nhan snippets", "tuc cac nhan snippets", "ton cac nhan snippets"

Try widening your search to All Fields.

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