Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chon cac noi snippets" » "chon cac code snippets", "cho cac noi snippets", "thong cac noi snippets", "hoc cac noi snippets", "chon cach noi snippets", "chon cac toi snippets", "chon cau noi 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: (((("chon cac noi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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