Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ham nhan duc snippets" » "pham nhan duc snippets", "hat nhan duc snippets", "cam nhan duc snippets", "ham nhan duoc snippets", "ham nhan luc snippets", "ham phan duc snippets", "ham nhan duc 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 duc 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 duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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