Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"cau de cam snippets" » "cau den cam snippets", "cau do cam snippets", "cuu de cam snippets", "cau de cai snippets", "cau de lam snippets"
"locating bug code snippets" » "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: (((("python missing data snippets") or ("cau de cam snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python missing data snippets") OR ("cau de cam snippets"))) OR ("locating bug code snippets")).
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