Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duc dung hat snippets" » "duc hung hat snippets", "duc cuong hat snippets", "duc phung hat snippets", "duc dung chat snippets", "duc dung nhat snippets", "duc dung phat snippets", "duc dung hat 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 hat 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 hat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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