Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"vu hong tran snippets" » "vu huong tran snippets", "vu hoang tran snippets", "vu hong trang snippets", "vu cong tran snippets", "vu thuong tran snippets", "du phong tran snippets", "vu hong 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: (((("vu hong 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: (((("vu hong tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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