Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chu duc toan snippets" » "chu duc code snippets", "chu duc tan snippets", "chu duc ton snippets", "chu duc hoan snippets", "thu duc toan snippets", "chua duoc toan snippets", "cuu duoc toan 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: (((("chu duc toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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