Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"tra thu hang snippets" » "tra thi hang snippets", "tra thuc hanh snippets", "tra thu huong snippets", "tran thu hang snippets", "tra thuc hang snippets", "ta thu hang snippets", "tra thu hang 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 ("tra thu hang snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tra thu hang snippets"))) OR ("locating bug code snippets")).
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