Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"voi dac phap snippets" » "voi dap phap snippets", "voi duc phap snippets", "voi danh phap snippets", "voi cac phap snippets", "voi dai phap snippets", "voi dan phap snippets", "voi dac phap 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: (((("voi dac phap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("voi dac phap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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