Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung le kh slippers" » "dung len kh slippers", "dung he kh slippers", "dung de kh slippers", "dung le kha slippers", "dung e kh slippers", "dung le ky slippers", "dung le kh slippery", "dung le kh 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 le kh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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