Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phan cho tin snippets" » "phan co tin snippets", "phan che tin snippets", "han cho tin snippets", "phan chon tin snippets", "phan chi tin snippets", "phan cho pin snippets"

Try widening your search to All Fields.

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