Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tri van tran snippets" » "tri van trang snippets", "tri van tranh snippets", "tri van tuan snippets", "thi van tran snippets", "tri va tran snippets", "trinh van tran snippets"

Try widening your search to All Fields.

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