Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cac toc cao snippets" » "cac toc code snippets", "cac toi cao snippets", "cac nuoc cao snippets", "cac thoi cao snippets", "cac hoc cao snippets", "cac toc dao snippets", "cac toc co 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: (((("cac toc cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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