Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tra chat cho snippets" » "tra chat code snippets", "tran chau cho snippets", "tran nhat cho snippets", "hoa chat cho snippets", "tra chat co snippets", "tra chat thom snippets", "tra cap cho 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: (((("tra chat cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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