Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap luat len slippers" » "phap luat len slippers", "dan luan len slippers", "dat luan len slippers", "dap luan len slippers", "dap luat le slippers", "dap luat hien slippers", "dap luat len slippery", "dap luat len grippers"
"locating bug code snippets" » "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 ("dap luat len slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dap luat len slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dap luat len slippers"))) or ("locating bug code snippets"))*.