Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vung tra cuu snippets" » "vung tra code snippets", "hung tran cuu snippets", "vung thua cuu snippets", "vung va cuu snippets", "vung tra cau snippets", "vung trau cua snippets", "vung trua cua 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: (((("vung tra cuu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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