Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"bai tra cuu snippets" » "bai tra code snippets", "bai tri cuu snippets", "bai toan cuu snippets", "hai trac cuu snippets", "bai tra cau snippets", "bai trau cua snippets", "bai 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: (((("bai tra cuu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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