Perhaps you should try some spelling variations:
"dung datat core snippets" » "dung dat core snippets"
"dung doi dan snippets" » "huong doi dan snippets", "dung tai dan snippets", "dung co dan snippets", "dung hoi dan snippets", "dung doi ban snippets", "dung doi dau snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 datat core snippets") or ("dung doi dan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung datat core snippets") OR ("dung doi dan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung datat core snippets ) or ( dung doi dan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung datat core snippets") or ("dung doi dan snippets"))) or ("locating bug code snippets"))*.