Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dau hoc dat snippets" » "dai hoc dat snippets", "du hoc dat snippets", "dan hoc dat snippets", "dau hoc dan snippets", "dau hoc dai snippets", "dau hoc phat snippets", "dau hoc dat 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: (((("dau hoc dat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau hoc dat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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