Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"trinh ban code snippets" » "trinh han code snippets", "trinh van code snippets", "trinh san code snippets", "trinh ban co snippets", "trinh ban cong snippets", "trinh bug code snippets", "trinh ban code slippers"
"dung luan code snippets" » "dung luan cong snippets", "dung luan che snippets", "dung luan de snippets", "dung luan code slippers"

Try widening your search to All Fields.

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