Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc toan noi snippets" » "duc toan code snippets", "duc tan noi snippets", "duc ton noi snippets", "duc hoan noi snippets", "duc toan roi snippets", "duc toan toi snippets", "duc toan hoc 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 noi snippets"))) or ("locating bug core snippets"))~.
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