Perhaps you should try some spelling variations:
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets", "python using data slippers"
"cung cu phan snippets" » "chung cu phan snippets", "cung cua phan snippets", "cong cu phan snippets", "cung cuu phan snippets", "cung cau phan snippets", "cung cu phan 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: (((("cung cu phan snippets") or ("python using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cung cu phan snippets") OR ("python using data snippets"))) OR ("locating bug code snippets")).
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