Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung doi san snippets" » "huong doi san snippets", "dung tai san snippets", "dung co san snippets", "dung doi sanh snippets", "dung di san snippets", "dung doi ban snippets"

Try widening your search to All Fields.

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