Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet doc cao snippets" » "viet doc code snippets", "viet duc cao snippets", "viet goc cao snippets", "viec doc cao snippets", "viet hoc cao snippets", "viet do cao snippets", "viet doc dao 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: (((("viet doc cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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