Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh toan de snippets" » "tinh toan de snippets", "thanh toan de snippets", "trinh han de snippets", "trinh toan du snippets", "trinh toan ke snippets", "trinh toan ve snippets"
"dung vbug code snippets" » "dung vung code snippets", "dung bug code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh toan de snippets") or ("dung vbug code snippets"))) or ("locating bugs code snippets"))~.
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