Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"luan day duc snippets" » "luan dac duc snippets", "luan xay duc snippets", "luat day duc snippets", "luan dao duc snippets", "luan day du snippets", "luan day doc snippets", "luan day duc slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("luan day duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan day duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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