Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung nhat he snippets" » "dung nhat code snippets", "dung nhan he snippets", "dang nhat he snippets", "dung nha he snippets", "dung nhat ve snippets", "dung nhat le snippets", "dung nhat de 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: (((("python using java snippets") or ("dung nhat he snippets"))) or ("locating bug core snippets"))~.
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