Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc toan de snippets" » "duc toan code snippets", "duc tan de snippets", "duc ton de snippets", "duc hoan de snippets", "duc toan du snippets", "duc toan ke snippets", "duc toan ve 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: (((("python using java snippets") or ("duc toan de snippets"))) or ("locating bug core snippets"))~.
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