Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dat thoi cau snippets" » "dat thoi code snippets", "dao thoi cau snippets", "dat thi cau snippets", "cac thoi cau snippets", "dat hoi cau snippets", "dat thong cau snippets", "dat thoai cac 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: (((("dat thoi cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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