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