Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khoa ha tran snippets" » "khoa ma tran snippets", "khoa he tran snippets", "hoa ha tran snippets", "khoa nha trang snippets", "khoa thai tran snippets", "khoa tan tran snippets", "khoa ha tran 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: (((("khoa ha tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa ha tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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