Perhaps you should try some spelling variations:
"dung deep code snippets" » "dung demo code snippets", "dung deu code snippets", "dung dien code snippets", "dung heep code snippets", "dung datep code snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung de code snippets" » "dung he code snippets", "dung dat code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung deep code snippets") or ("dung de code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung deep code snippets") OR ("dung de code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung deep code snippets ) or ( dung de code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung deep code snippets") or ("dung de code snippets"))) or ("locating bug core snippets"))*.