Perhaps you should try some spelling variations:
"nang thon code slippers" » "nong thon code slippers", "nang chon code slippers", "nang thuong code slippers"
"dung vi code snippets" » "dung va code snippets", "dung viet code snippets", "dung tai 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang thon code slippers") OR ("dung vi code snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( nang thon code slippers ) or ( dung vi code snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("nang thon code slippers") or ("dung vi code snippets"))) or ("locating bug code snippets"))*.