Perhaps you should try some spelling variations:
"trinh doi trinh snippets" » "trinh do trinh snippets", "trinh hoi trinh snippets", "tinh doi trinh snippets", "trinh doc trinh snippets", "trinh doi tinh snippets", "trinh dong trinh snippets", "trinh doi trinh slippers"
"dung hung code snippets" » "dung chung code snippets", "dung nhung code snippets", "dung huong code snippets", "dung hung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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