Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ren duc phan snippets" » "ren dung phan snippets", "ren duc thang snippets", "ren duc phung snippets", "tran duc phan snippets", "dien duc phan snippets", "tien duc phan snippets", "ren duc phan 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: (((("ren duc phan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ren duc phan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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