Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hoc can snippets" » "van hoc code snippets", "van hoa can snippets", "van hoc dan snippets", "van hoc cao snippets", "van hoc cac snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"

Try widening your search to All Fields.

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