Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh co cu snippets" » "trinh co code snippets", "trinh do cu snippets", "trinh cong cu snippets", "trinh hoa cu snippets", "trinh co cau snippets", "trinh co cua snippets", "trinh cho cu 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: (((("trinh co cu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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