Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van nhan hoc snippets" » "van nhan code snippets", "van phan hoc snippets", "van thanh hoc snippets", "danh nhan hoc snippets", "van nha hoc snippets", "van nhan hoa snippets", "van than hoc 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: (((("python using java snippets") or ("van nhan hoc snippets"))) or ("locating bug core snippets"))~.
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