Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan cau long snippets" » "dan cau code snippets", "dan cuu long snippets", "dan cau cong snippets", "dan cau dong snippets", "danh cau long snippets", "dan ca long snippets", "dat cau long 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: (((("dan cau long snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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