Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tan tran he snippets" » "tan tran code snippets", "tan toan he snippets", "tan tran hien snippets", "tan tran hiep snippets", "toan tran he snippets", "than tran he snippets", "tuan tran he snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("tan tran he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan tran he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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