Perhaps you should try some spelling variations:
"thong cua thiet snippets" » "thong quan thiet snippets", "thong tu thiet snippets", "huong cua thiet snippets", "thong chua thiet snippets", "thong cuu thiet snippets", "thong cua triet snippets", "thong cua thiet 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: (((("thong cua thiet snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong cua thiet snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong cua thiet snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong cua thiet snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.