Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cac cau toi snippets" » "cac cau code snippets", "cac mau toi snippets", "bac cau toi snippets", "ca cau toi snippets", "cac cau hoi snippets", "cac cau thi snippets", "cac cac toi 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 cau toi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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