Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh de bat slippers" » "trinh den bat slippers", "trinh do bat slippers", "trinh he bat slippers", "trinh de dat slippers", "trinh de bao slippers", "trinh de bat slippery", "trinh de bat grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh de bat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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