Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets"
"trinh cau che snippets" » "trinh chat che snippets", "trinh chao che snippets", "trinh tu che snippets", "trinh cuu che snippets", "trinh cac che snippets", "trinh cau chu snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung dung code snippets") or ("trinh cau che snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dung code snippets") OR ("trinh cau che snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung dung code snippets ) or ( trinh cau che snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dung code snippets") or ("trinh cau che snippets"))) or ("locating bugs code snippets"))*.