Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ca mong toan snippets" » "ca mong code snippets", "ca mon toan snippets", "ca bong toan snippets", "ca cong toan snippets", "ca muong toan snippets", "va mong toan snippets", "ca ong 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: (((("ca mong toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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