Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"thi va day snippets" » "thi van day snippets", "thi ha day snippets", "phi va day snippets", "thi va dao snippets", "thi va dau snippets", "thi va dap snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python missing data snippets") or ("thi va day snippets"))) or ("locating bug core snippets"))~.
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