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