Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"doi cay luon snippets" » "doi tay luon snippets", "doi cat luong snippets", "doi cao luong snippets", "doi ca luon snippets", "doi day luon snippets", "voi cay luon snippets", "doi cay luon 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: (((("python using java snippets") or ("doi cay luon snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doi cay luon snippets"))) OR ("locating bug code snippets")).
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