Perhaps you should try some spelling variations:
"dung viiiaan code slippers" » "dung vaiiaan code slippers", "dung vietiiaan code slippers", "dung taiiiaan 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.

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