Perhaps you should try some spelling variations:
"trinh dat thu snippets" » "trinh vat thu snippets", "trinh da thu snippets", "trinh dan thu snippets", "trinh dat phu snippets", "trinh sat thuc snippets", "trinh dat tieu snippets", "trinh dat thu slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets"

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