Perhaps you should try some spelling variations:
"dung vainh code snippets" » "dung vinh code snippets", "dung van code snippets", "dung ninh code snippets"
"huong cfd code slippers" » "huong cua code slippers", "huong c code slippers", "huong cau code slippers"
"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 vainh code snippets") or ("huong cfd code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vainh code snippets") OR ("huong cfd code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vainh code snippets ) or ( huong cfd code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vainh code snippets") or ("huong cfd code slippers"))) or ("locating bug code snippets"))*.