Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pha du cac snippets" » "pha du code snippets", "pham duc cac snippets", "pham duy cac snippets", "phan duc cac snippets", "pha duc cac snippets", "pha tu cac snippets", "pha do cac 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: (((("pha du cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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