Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duc van phu snippets" » "duc va phu snippets", "duc tan phu snippets", "duc manh phu snippets", "duc san phu snippets", "duc van phung snippets", "duc van phan snippets", "duc van phu 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: (((("duc van phu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc van phu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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