Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung chi len slippers" » "dung cho len slippers", "dung thi len slippers", "dung chien len slippers", "dung chi ben slippers", "dung thi lien slippers", "dung chet len slippers", "dung chi len slippery", "dung chi len 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: (((("dung chi len slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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