Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dam van tran snippets" » "dam van trang snippets", "dam van tranh snippets", "dam van tuan snippets", "dao van tran snippets", "nam van tran snippets", "pham van tran snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dam van tran snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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