Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"nin anh tran snippets" » "nin anh tuan snippets", "nin anh toan snippets", "nin anh trac snippets", "hinh anh tran snippets", "dien anh tran snippets", "minh anh tran snippets", "nin anh tran 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: (((("nin anh tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nin anh tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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