Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duc dung ket snippets" » "duc hung ket snippets", "duc cuong ket snippets", "duc phung ket snippets", "duc dong ket snippets", "duc dung kem snippets", "duc dung viet snippets", "duc dung ket 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 dung ket 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 dung ket snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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