Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"khu va duc snippets" » "khau va duc snippets", "thu va duc snippets", "khu vu duc snippets", "khu van duc snippets", "khu va duoc snippets", "khu va doc snippets"

Try widening your search to All Fields.

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