Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tao tang cua snippets" » "tao tang code snippets", "cao tang cua snippets", "hao tang cua snippets", "tao bang cua snippets", "tao mang cua snippets", "tao hang cua snippets", "tao tang luan 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: (((("tao tang cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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