Perhaps you should try some spelling variations:
"chon cac cach snippets" » "chon cac code snippets", "cho cac cach snippets", "thong cac cach snippets", "hoc cac cach snippets", "chon cai cach snippets", "chon cuoc cach snippets", "chon va cach snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("chon cac cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
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