Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"den tran lam snippets" » "den tuan lam snippets", "den thanh lam snippets", "dang tran lam snippets", "den trang lam snippets", "den tranh lam snippets", "den trai lam snippets"

Try widening your search to All Fields.

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