Perhaps you should try some spelling variations:
"dung cauc code snippets" » "dung cac code snippets", "dung cau code snippets", "dung cu code snippets", "dung cauc core snippets", "dung cauc code slippers"
"dung cua phap snippets" » "dung luan phap snippets", "dung cho phap snippets", "dung cu phap snippets", "dung va phap snippets", "dung cua nha snippets", "dung cua phap slippers"
"locating bug code snippets" » "locating bug core 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 cauc code snippets") or ("dung cua phap snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cauc code snippets") OR ("dung cua phap snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung cauc code snippets") or ("dung cua phap snippets"))) or ("locating bug code snippets"))*.