Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ngon va dat snippets" » "gon va dat snippets", "ngo va dat snippets", "ngoi va dat snippets", "ngon va dao snippets", "ngon va dau snippets", "ngon va dap snippets", "ngon va 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: (((("ngon va 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: (((("ngon va dat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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