Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khac den cac snippets" » "khac den code snippets", "khac diep cac snippets", "khac duan cac snippets", "khach deu cac snippets", "khac dien cac snippets", "khac dan cac snippets", "khac de 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: (((("khac den cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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