Perhaps you should try some spelling variations:
"dung vian core snippets" » "dung van core snippets", "dung vien core snippets", "dung va core snippets"
"dong ha code snippets" » "dong hoa code snippets", "dong va code snippets", "dong hoc code 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 vian core snippets") or ("dong ha code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vian core snippets") OR ("dong ha code snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( dung vian core snippets ) or ( dong ha code snippets ))) or ( locating bug code snippets ))*.