Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ly dung duc snippets" » "ly duong duc snippets", "ly dang duc snippets", "ly dung du snippets", "ly dong duc snippets", "xay dung duc snippets", "ly khung duc snippets", "ly dung duc 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: (((("python using java snippets") or ("ly dung duc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("ly dung duc snippets"))) OR ("locating bug code snippets")).
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