Perhaps you should try some spelling variations:
"dung cacuc code snippets" » "dung cac code snippets", "dung cau code snippets", "dung cuacuc code snippets", "dung caccuc code snippets", "dung camcuc code snippets", "dung cacuc core snippets"
"dung ca chi snippets" » "dung cua chi snippets", "dung cac chi snippets", "dung cam chi snippets", "dung a chi snippets", "dung cu chi snippets", "dung la chi snippets"
"locating bug code snippets" » "locating bug core snippets", "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 ca chi snippets") or ("dung cacuc code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ca chi snippets") OR ("dung cacuc code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ca chi snippets ) or ( dung cacuc code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ca chi snippets") or ("dung cacuc code snippets"))) or ("locating bug code snippets"))*.