Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duc hat nhan snippets" » "duc ca nhan snippets", "duc van nhan snippets", "duc ban nhan snippets", "duc phat nhan snippets", "duc hau nhan snippets", "duc ha nhan snippets", "duc hat nhan 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: (((("duc hat nhan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hat nhan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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