Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"juan cao duc snippets" » "quang cao duc snippets", "toan cao duc snippets", "quan cau duc snippets", "juan dao duc snippets", "juan cao suc snippets", "juan giao duc snippets", "juan cao 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: (((("juan cao 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: (((("juan cao duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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