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"
"phan duc tin snippets" » "pham duc tin snippets", "phan tu tin snippets", "phan dau tin snippets", "phan duc tien snippets", "phan duc tan snippets", "phan duc ton snippets", "phan duc tin 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 duc tin snippets") or ("python using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan duc tin snippets") OR ("python using data snippets"))) OR ("locating bug code snippets")).
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