Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet cau ca snippets" » "viet cau code snippets", "viet chau ca snippets", "viet ca ca snippets", "viet chu ca snippets", "viet cau cua snippets", "viet cay ca snippets", "viet cau ha 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 cau ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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