Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"xuan thuc va snippets" » "luan thuc va snippets", "xuan thu va snippets", "xuan thuy va snippets", "xuan thuc vat snippets", "xuan thuc dan snippets", "xuan thuc day snippets", "xuan thuc va 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: (((("xuan thuc va snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan thuc va snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan thuc va snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
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