Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc phan duc slippers" » "hoc phan duc slippers", "duc phan duc slippers", "doc than duc slippers", "doc pham duc slippers", "doc phan tu slippers", "doc phan dau slippers", "doc phan duc slippery", "doc phan duc 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: (((("python using java snippets") or ("doc phan duc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doc phan duc slippers"))) OR ("locating bug code snippets")).
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