Perhaps you should try some spelling variations:
"tran cong trong snippets" » "tran cong thuong snippets", "tran cong trinh snippets", "tran dung trong snippets", "tran hong trong snippets", "trien cong trong snippets", "tran hoang trong snippets", "tran cong trong 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: (((("tran cong trong snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran cong trong snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran cong trong snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran cong trong snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.