Perhaps you should try some spelling variations:
"trinh rate code snippets" » "trinh vat code snippets", "trinh ra code snippets", "trinh sat code snippets", "trinh rate core snippets", "trinh rate code slippers"
"dung qua dat snippets" » "duong qua dat snippets", "dung quan dat snippets", "dung cua dat snippets", "dung quy dat snippets", "dung qua da snippets", "dung qua dan snippets", "dung qua dat slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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