Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duc dung lam snippets" » "duc hung lam snippets", "duc cuong lam snippets", "duc phung lam snippets", "duc dung luan snippets", "duc dung tai snippets", "duc dung dat snippets", "duc dung lam 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 lam 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 lam snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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