Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van cac cuoc snippets" » "van cac code snippets", "van cac nuoc snippets", "van ca cuoc snippets", "van cac quoc snippets", "van hac cuoc snippets", "van cau cuoc snippets", "van bac cuoc 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 cac cuoc snippets"))) or ("locating bug core snippets"))~.
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