Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"phan co nhat snippets" » "phan bo nhat snippets", "phan cong nhat snippets", "phan cac nhat snippets", "phan do nhat snippets", "phan co hat snippets", "phan ho nhat snippets", "phan co nhat 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: (((("phan co nhat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan co nhat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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