Perhaps you should try some spelling variations:
"dung hung code snippets" » "dung chung code snippets", "dung nhung code snippets", "dung huong code snippets", "dung hung code slippers"
"dung cau phi snippets" » "dung chau phi snippets", "dung cu phi snippets", "dung cac phi snippets", "dung cau thi snippets", "dung chau phu snippets", "dung cau phi slippers"
"locating bug code 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: (((("dung cau phi snippets") or ("dung hung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cau phi snippets") OR ("dung hung code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung cau phi snippets") or ("dung hung code snippets"))) or ("locating bug code snippets"))*.