Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vat phan cau snippets" » "vat phan code snippets", "va phan cau snippets", "van phan cau snippets", "sat phan cau snippets", "vat phan dau snippets", "vat phan cac snippets", "vat phan tu 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: (((("vat phan cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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