Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh ca cay snippets" » "danh ca code snippets", "dan ca cay snippets", "doanh cua cay snippets", "danh cho cay snippets", "danh cua cay snippets", "danh cac cay snippets", "danh ca 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: (((("danh ca cay snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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