Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hat dan coc snippets" » "hat dan code snippets", "hat van coc snippets", "mat dan coc snippets", "nhat danh coc snippets", "hat dan toc snippets", "hat dan hoc snippets", "hat dan cac 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: (((("hat dan coc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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