Perhaps you should try some spelling variations:
"trinh dong vat snippets" » "trinh duong vat snippets", "trinh dung vat snippets", "trinh cong vat snippets", "trinh dong va snippets", "trinh dong von snippets", "trinh dong ha snippets", "trinh dong vat 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"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh dong vat 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 dong vat snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh dong vat snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dong vat snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.