Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"mat cua co snippets" » "mat cua code snippets", "ma cua co snippets", "manh cua co snippets", "mang cua co snippets", "mat cua bo snippets", "mat cua cong snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("mat cua co snippets") or ("python missing data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat cua co snippets") OR ("python missing data snippets"))) OR ("locating bug core snippets")).
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