Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"chu den tran snippets" » "chu den tuan snippets", "chu den thanh snippets", "chu dang tran snippets", "chu de tran snippets", "cau den tran snippets", "chua dien tran snippets"

Try widening your search to All Fields.

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