Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"toc la bau snippets" » "toc ta bau snippets", "toi la bau snippets", "toc ba bau snippets", "toc la bac snippets", "toc la bat snippets", "toc la mau 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 ("toc la bau snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python missing data snippets") OR ("toc la bau snippets"))) OR ("locating bug core snippets")).
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