Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan cuu xac slippers" » "phan cau xac slippers", "phan huu xac slippers", "phan cung xac slippers", "phan cuu dac slippers", "phan cuu cac slippers", "phan cuu xay slippers", "phan cuu xac slippery", "phan cuu xac 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: (((("phan cuu xac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan cuu xac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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