Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ven van dung snippets" » "ven van dong snippets", "ven xay dung snippets", "ven tin dung snippets", "vien van dung snippets", "nen van dung snippets", "van van dung snippets", "ven van 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: (((("ven van 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: (((("ven van dung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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