Perhaps you should try some spelling variations:
"dung viii code snippets" » "dung vi code snippets", "dung viet code snippets", "dung vinh code snippets"
"dung hung core snippets" » "dung chung core snippets", "dung nhung core snippets", "dung huong core 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 viii code snippets") or ("dung hung core snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung viii code snippets") OR ("dung hung core snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung viii code snippets ) or ( dung hung core snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung viii code snippets") or ("dung hung core snippets"))) or ("locating bug code snippets"))*.