Perhaps you should try some spelling variations:
"cuon danh hau snippets" » "cuong danh hau snippets", "cuoi dan hau snippets", "cuon sach hau snippets", "cuon danh dau snippets", "cuon danh cau snippets", "cuon doanh chau snippets", "cuon danh hau slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "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: (((("cuon danh hau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon danh hau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuon danh hau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon danh hau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.