Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"tran thuy ma snippets" » "thanh thuy ma snippets", "tran thi ma snippets", "tran huu ma snippets", "tran thuc ma snippets", "tran thuoc ma snippets", "tran thuy san snippets", "tran thuy ma 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: (((("tran thuy ma snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran thuy ma snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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