Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"toc qua dung snippets" » "toc quang dung snippets", "toc su dung snippets", "toc qua song snippets", "goc qua dung snippets", "tac quan dung snippets", "hoc quan dung snippets", "toc qua dung 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: (((("toc qua dung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc qua dung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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