Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dac cac nhan snippets" » "dac ca nhan snippets", "dac cac nha snippets", "dac cam nhan snippets", "dac sac nhan snippets", "dac lac nhan snippets", "dan cac nhan snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dac cac nhan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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