Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ham nhan anh snippets" » "pham nhan anh snippets", "hat nhan anh snippets", "cam nhan anh snippets", "ham nhat anh snippets", "ham phan anh snippets", "ham nhan nhanh snippets", "ham nhan anh 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: (((("ham nhan anh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ham nhan anh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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