Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"con thuc dan snippets" » "cong thuc dan snippets", "can thuc dan snippets", "co thuc dan snippets", "con thuc hanh snippets", "con hoc dan snippets", "con thuc vat snippets", "con thuc dan 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: (((("con thuc dan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con thuc dan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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