Perhaps you should try some spelling variations:
"dung vang code slippers" » "dung van code slippers", "dung dang code slippers", "dung nang code slippers", "dung vang de slippers"
"cong cu code snippets" » "chung cu code snippets", "cong cfd 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 vang code slippers") or ("cong cu code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vang code slippers") OR ("cong cu code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vang code slippers ) or ( cong cu code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vang code slippers") or ("cong cu code snippets"))) or ("locating bug code snippets"))*.