Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets", "python missing data slippers"
"khu va tin snippets" » "khau va tin snippets", "thu va tin snippets", "khu vu tin snippets", "khu va tinh snippets", "khu van tin snippets", "khu va tieng snippets", "khu va tin slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("khu va tin snippets") or ("python missing data snippets"))) or ("locating bug code snippets"))~.
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