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