Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu chat hoc snippets" » "thu chat code snippets", "thu nhat hoc snippets", "thu thuat hoc snippets", "thuc chan hoc snippets", "thu chat hoa snippets", "thu chat thom snippets", "thu cho 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 ("thu chat hoc snippets"))) or ("locating bug core snippets"))~.
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