Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cac nhan doi snippets" » "cac nhan code snippets", "ca nhan doi snippets", "cac nha doi snippets", "cam nhan doi snippets", "cac nhan dai snippets", "cac nhan dot snippets", "cac nhan loai 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 ("cac nhan doi snippets"))) or ("locating bug core snippets"))~.
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