Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phan dan bac snippets" » "phan dang bac snippets", "phan dau bac snippets", "nhan dan bac snippets", "phan dan ba snippets", "phan van bac snippets", "phan dong bac snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("phan dan bac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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