Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"phan cuu san snippets" » "phan cau san snippets", "phan huu san snippets", "phan cung san snippets", "phan cuu van snippets", "phan cua san snippets", "phan cuu ban snippets", "phan cuu san 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 cuu san snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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