Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"chi xa bac snippets" » "thi xa bac snippets", "chi a bac snippets", "chi ha bac snippets", "chi la bac snippets", "chi xa ba snippets", "chi xu bac 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 ("chi xa bac snippets"))) or ("locating bug core snippets"))~.
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