Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"va doi nhom snippets" » "va voi nhom snippets", "va doi nam snippets", "va doi nhan snippets", "va dai nhom snippets", "va doc nhom snippets", "va do nhom snippets", "va doi nhom 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: (((("va doi nhom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va doi nhom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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