Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cac nhan phi snippets" » "ca nhan phi snippets", "cac nha phi snippets", "cam nhan phi snippets", "cac phan phoi snippets", "cac nhanh thi snippets", "cac nhanh phu snippets"

Try widening your search to All Fields.

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