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