Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ngo thu tran snippets" » "ngo thu trang snippets", "ngo thi tran snippets", "ngo phu tran snippets", "nguoi thu tran snippets", "nghe thu tran snippets", "ngo thu tran 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: (((("ngo thu tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngo thu tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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