Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"cuu d tran snippets" » "cuu _ tran snippets", "cuu m tran snippets", "cuu n tran snippets", "cuu de tran snippets", "cuu da tran snippets", "cuu du tran snippets"

Try widening your search to All Fields.

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